WorldWideScience

Sample records for black-and-white warbler mniotilta

  1. Personal Learning Environments in Black and White

    OpenAIRE

    Kalz, Marco

    2010-01-01

    Kalz, M. (2010, 22 January). Personal Learning Environments in Black and White. Presentation provided during the workshop "Informal Learning and the use of social software in veterinary medicine" of the Noviceproject (http://www.noviceproject.eu), Utrecht, The Netherlands.

  2. Black and White Differentials in Mortality.

    Science.gov (United States)

    Rene, Antonio A.; Clifford, Patrick R.

    1986-01-01

    Overviews vital statistics data, emphasizing differences in health status between the Black and White populations with respect to specific diseases and mortality. Discusses major causes of death among US Blacks. (GC)

  3. Black and white human skin differences

    DEFF Research Database (Denmark)

    Andersen, Klaus Ejner; Maibach, H I

    1979-01-01

    to exist in the frequency of which several skin diseases occur among blacks and whites. A striking feature in this literature is the disagreement between authors. Common for much of this information is difficulty of interpretation, because of socioeconomic influences and other environmental factors....

  4. Black and white human skin differences

    DEFF Research Database (Denmark)

    Andersen, Klaus Ejner; Maibach, H I

    1979-01-01

    This review of black and white human skin differences emphasizes the alleged importance of factors other than the obvious, i.e., skin color. Physicochemical differences and differences in susceptibility to irritants and allergens suggest a more resistant black than white skin. Differences appear ...

  5. Color to black-and-white converter

    Science.gov (United States)

    Perry, W. E.

    1977-01-01

    Lanthanum-modified lead zirconate titanate ceramic plate, when sandwiched between pair of conventional light polarizers, forms electrically controlled coverter for television camera. Assembly can be used with camera at remote site to enable camera to transmit color or black and white signal on command.

  6. Eating pathology among Black and White smokers.

    Science.gov (United States)

    Sánchez-Johnsen, Lisa A P; Fitzgibbon, Marian L; Ahluwalia, Jasjit S; Spring, Bonnie J

    2005-02-01

    Among White smokers, many females use smoking as a weight control strategy. Little is known about the relationship between eating pathology and smoking among Black females, and whether smokers who enroll in treatment differ in eating pathology from smokers who decline treatment. We examined eating pathology among Black and White smokers who enrolled in a smoking cessation treatment and those who declined treatment. Participants were 100 Black and 100 White female smokers (ages 18-65) who completed three measures of eating pathology. After controlling for BMI, Whites reported greater levels of overall eating pathology than Blacks [F(1,195)=4.1; pWhite than Black smokers. However, once females seek smoking cessation treatment, these ethnic differences are not apparent.

  7. The Relationship of Prejudicial Attitudes on Levels of Responding Skills to Black and White Clients.

    Science.gov (United States)

    Williams, Charles; And Others

    1985-01-01

    Investigated whether prejudicial attitudes of Black and White counselors affected their verbal communication and written discrimination responses to Black and White clients. Results indicated that prejudicial attitudes of Black and White counselors had no significant relationship to their levels of responding skills to Black and White clients.…

  8. Real-time craving differences between black and white smokers.

    Science.gov (United States)

    Carter, Brian L; Paris, Megan M; Lam, Cho Y; Robinson, Jason D; Traylor, Amy C; Waters, Andrew J; Wetter, David W; Cinciripini, Paul M

    2010-01-01

    Black and White smokers may experience aspects of nicotine dependence, including craving, differently. This study used a naturalistic technique, ecological momentary assessment (EMA), to explore differences in craving, mood, expectancy, and smoking enjoyment between Black and White smokers. Participants carried personal digital assistants (PDAs) programmed to obtain multiple daily assessments. Black smokers reported higher craving after smoking and at random assessment times and higher cigarette enjoyment. No differences were found in mood or expectancy. Racial differences in psychological factors related to smoking are explored in the contexts of genetic, sociological, and psychophysiological distinctions. Implications for practice and research are discussed. (Am J Addict 2010;00:1-5).

  9. Romanticism and Eroticism among Black and White College Students.

    Science.gov (United States)

    Houston, Lawrence N.

    1981-01-01

    A questionnaire was administered to 1,142 Black and White university students of both sexes in an effort to determine the relationship between eroticism, romanticism and sexual identity. Results indicated that males were more erotic, females more romantic, and that the discrepancy was greater for Blacks than for Whites. (Author/CM)

  10. Transcript expression in endometrial cancers from Black and White patients.

    Science.gov (United States)

    Maxwell, G Larry; Allard, Jay; Gadisetti, Chandramouli V R; Litzi, Tracy; Casablanca, Yovanni; Chandran, Uma; Darcy, Kathleen M; Levine, Douglas A; Berchuck, Andrew; Hamilton, Chad A; Conrads, Thomas P; Risinger, John I

    2013-07-01

    Previous studies suggest that differences in molecular features of endometrial cancers between racial groups may contribute to the poorer survival in Blacks. The objective of this investigation was to determine whether gene expression among endometrial cancers is different between Blacks and Whites. Fresh frozen tumors from 25 Black patients were matched by stage, grade, and histology to endometrial cancer specimens from 25 White patients. Each case was macrodissected to produce specimens possessing a minimum of 75% cancer cellularity. A subset of 10 matched pairs was also prepared using laser microdissection (LMD) to produce specimens possessing a minimum of 95% cancer cells. Total RNA isolated from each sample was analyzed using the Affymetrix Human Genome U133 Plus 2.0 arrays. Data were analyzed using principal component analysis and binary class comparison analyses. Unsupervised analysis of the 50 endometrial cancers failed to identify global gene expression profiles unique to Black or White patients. In a subset analysis of 10 matched pairs from Blacks and Whites prepared using LMD and macrodissection, unsupervised analysis did not reveal a unique gene expression profile associated with race in either set, but associations were identified that relate to sample preparation technique, histology and stage. Our microarray data revealed no global gene expression differences and identified few individual gene differences between endometrial cancers from Blacks and Whites. More comprehensive methods of transcriptome analysis could uncover RNAs that may underpin the disparity of outcome or prevalence of endometrial cancers in Blacks and Whites. Copyright © 2013 Elsevier Inc. All rights reserved.

  11. Conflict Management Styles in Black and White Subjective Culture.

    Science.gov (United States)

    Ting-Toomey, Stella

    To determine communication conflict style differences in black and white subjective cultures, 123 black and 180 white university students were administered the Organizational Communication Conflict Instrument (OCCI), a scale measuring the three conflict management styles: control (confrontation); nonconfrontation; and solution-orientation. Results…

  12. Population status of black and white colobus monkeys ( Colobus ...

    African Journals Online (AJOL)

    Eastern black and white colobus monkeys, or guerezas (Colobus guereza), are among the few primate species that have traditionally been regarded as not being adversely affected by habitat degradation. This view was recently challenged by von Hippel et al. (2000) who, using data from short-term censuses in 1992 and ...

  13. Tobacco smoking in black and white South Africans | Peltzer | East ...

    African Journals Online (AJOL)

    Tobacco smoking in black and white South Africans. K. Peltzer. Abstract. (East African Medical Journal: 2001 78(3): 115-118). Full Text: EMAIL FREE FULL TEXT EMAIL FREE FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT · http://dx.doi.org/10.4314/eamj.v78i3.9074 · AJOL African Journals Online.

  14. Definition of Life Stress among Black and White Urban Aged.

    Science.gov (United States)

    Young, Rosalie F.; And Others

    The effects of stress on the psychosocial well-being of older persons have been well documented. Research on stress among the aged has generally considered recent life events as salient stressors in late life and has focussed on older persons without regard to racial differences. Interviews were conducted with 400 elderly black and white residents…

  15. Correlates of Ideal Body Size among Black and White Adolescents

    Science.gov (United States)

    Nollen, Nicole; Kaur, Harsohena; Pulvers, Kim; Choi, Won; Fitzgibbon, Marian; Li, Chaoyang; Nazir, Niaman; Ahluwalia, Jasjit S.

    2006-01-01

    Cultural differences have been found in body image perceptions among Black and White adolescents, however little is known about the factors associated with perceptions of an ideal body size (IBS). This study examined differences in correlates of IBS among 265 Black (116 girls and 62 boys) and White (63 girls and 24 boys) adolescents. IBS for White…

  16. Correlates of persistent thinness in black and white young women

    NARCIS (Netherlands)

    Franko, DL; Thompson, D; Russell, R; Schreiber, GB; Crawford, PB; Daniels, [No Value; Striegel-Moore, RH

    2005-01-01

    Objective: To examine health and psychosocial correlates of persistent thinness in black and white young adult women. Research Methods and Procedures: 1830 females (n = 988 black, n = 842 white) who participated in the National Heart, Lung, and Blood Institute Growth and Health Study were asked to

  17. Linking Communalism to Achievement Correlates for Black and White Undergraduates

    Science.gov (United States)

    Tyler, Kenneth; Love, Keisha; Brown, Carrie; Roan-Belle, Clarissa; Thomas, Deneia; Garriott, Patton O.

    2010-01-01

    This study examined relationships between home-based communal activities and beliefs and student reports of various achievement correlates with 290 black and white undergraduates. MANOVA procedures examined differences in self-esteem, self-efficacy, identified motivation, motivation to know, and amotivation and scores on Home Communalism Measure…

  18. Chemical Demonstrations with Consumer Chemicals: The Black and White Reaction

    Science.gov (United States)

    Wright, Stephen W.

    2002-01-01

    A color-change reaction is described in which two colorless solutions are combined to afford a black mixture. Two more colorless solutions are combined to afford a white mixture. The black and white mixtures are then combined to afford a clear, colorless solution. The reaction uses chemicals that are readily available on the retail market: vitamin C, tincture of iodine, vinegar, ammonia, bleach, Epsom salt, and laundry starch.

  19. Brumation of introduced Black and White Tegus, Tupinambis merianae (Squamata: Teiidae), in southern Florida

    Science.gov (United States)

    McEachern, Michelle; Yackel Adams, Amy A.; Klug, Page E.; Fitzgerald, Lee A.; Reed, Robert N.

    2015-01-01

    An established population of Tupinambis merianae (Black and White Tegu) in southeastern Florida threatens the Everglades ecosystem. Understanding the behavioral ecology of Black and White Tegus could aid in management and control plans. Black and White Tegus are seasonally active and brumate during the winter in their native range, but brumation behavior is largely unstudied in either the native or the invasive range. We describe the first observations of Black and White Tegu brumation in southeastern Florida after monitoring 5 free-ranging, adult male Black and White Tegus through an inactive season using radiotelemetry and automated cameras. Duration of brumation averaged 137 days, beginning in September and ending by February. One of the 5 Black and White Tegus emerged to bask regularly during brumation, which to our knowledge represents the first documented instance of a free-ranging Black and White Tegu basking during brumation. These preliminary findings provide a basis for future research of brumation behavior.

  20. Obesity trends and perinatal outcomes in black and white teenagers.

    Science.gov (United States)

    Halloran, Donna R; Marshall, Nicole E; Kunovich, Robert M; Caughey, Aaron B

    2012-12-01

    Our objective was to explore the trends in prepregnancy body mass index (BMI) for black and white teenagers over time and the association between elevated BMI and outcomes based on race. This was a retrospective cohort study of singleton infants (n = 38,158) born to black (34%) and white (66%) teenagers (teenagers with elevated prepregnancy BMI increased significantly from 17-26%. White and black overweight and obese teenagers were more likely to have pregnancy-related hypertension than normal-weight teenagers; postpartum hemorrhage was increased only in obese black teenagers, and infant complications were increased only in overweight and obese white teenagers. Because the percentage of elevated prepregnancy BMI has increased in white teenagers, specific risks for poor maternal and perinatal outcomes in the overweight and obese teenagers varies by race. Copyright © 2012 Mosby, Inc. All rights reserved.

  1. The Voices of Black and White Rural Battered Women in Domestic Violence Shelters

    Science.gov (United States)

    Few, April L.

    2005-01-01

    Very little research has examined the experiences of Black and White rural battered women. In this exploratory study of 88 participants, 30 rural battered women who sought assistance from domestic violence shelters in southwest Virginia were interviewed. Black and White rural women's experiences in the shelters, helpseeking, and perceived social…

  2. Drawing Test Performance of Black and White Preschoolers as a Function of Biracial Testing.

    Science.gov (United States)

    Ratusnik, David L.; Koenigsknecht, Roy A

    Six speech and language clinicians, 3 black and 3 white, administered the Goodenough Drawing Test (1926) to 144 preschoolers. The 4 groups, lower-socioeconomic black and white and middle-socioeconomic black and white, were equally divided by sex. The biracial clinical setting was shown to influence test scores in black preschool age children.…

  3. A comprehensive multilocus phylogeny for the wood-warblers and a revised classification of the Parulidae (Aves)

    Science.gov (United States)

    Lovette, I.J.; Perez-Eman, J. L.; Sullivan, J.P.; Banks, R.C.; Fiorentino, I.; Cordoba-Cordoba, S.; Echeverry-Galvis, M.; Barker, F.K.; Burns, K.J.; Klicka, J.; Lanyon, Scott M.; Bermingham, E.

    2010-01-01

    The birds in the family Parulidae-commonly termed the New World warblers or wood-warblers-are a classic model radiation for studies of ecological and behavioral differentiation. Although the monophyly of a 'core' wood-warbler clade is well established, no phylogenetic hypothesis for this group has included a full sampling of wood-warbler species diversity. We used parsimony, maximum likelihood, and Bayesian methods to reconstruct relationships among all genera and nearly all wood-warbler species, based on a matrix of mitochondrial DNA (5840 nucleotides) and nuclear DNA (6 loci, 4602 nucleotides) characters. The resulting phylogenetic hypotheses provide a highly congruent picture of wood-warbler relationships, and indicate that the traditional generic classification of these birds recognizes many non-monophyletic groups. We recommend a revised taxonomy in which each of 14 genera (Seiurus, Helmitheros, Mniotilta, Limnothlypis, Protonotaria, Parkesia, Vermivora, Oreothlypis, Geothlypis, Setophaga, Myioborus, Cardellina, Basileuterus, Myiothlypis) corresponds to a well-supported clade; these nomenclatural changes also involve subsuming a number of well-known, traditional wood-warbler genera (Catharopeza, Dendroica, Ergaticus, Euthlypis, Leucopeza, Oporornis, Parula, Phaeothlypis, Wilsonia). We provide a summary phylogenetic hypothesis that will be broadly applicable to investigations of the historical biogeography, processes of diversification, and evolution of trait variation in this well studied avian group. ?? 2010 Elsevier Inc.

  4. Measuring eating concerns in Black and White adolescent girls.

    Science.gov (United States)

    Franko, Debra L; Striegel-Moore, Ruth H; Barton, Bruce A; Schumann, Barbara C; Garner, David M; Daniels, Stephen R; Schreiber, George B; Crawford, Patricia B

    2004-03-01

    Few instruments exist to measure eating concerns in adolescent girls from diverse ethnic backgrounds. A Children's version of the Eating Disorder Inventory (EDI-C) has been under development for several years and was designed to be more appropriate for younger children with lower reading levels. However, little is known about the validity of this instrument. The current study reports on the factor structure of an early version of the EDI-C using nonclinical samples of 1,073 White and 1,155 Black girls (ages 11-12). Factor analysis resulted in an eight-factor solution for each group that included a weight concerns factor and an emotional distress factor. For Black girls only, the positively worded items from the Body Dissatisfaction subscale loaded on a separate factor. Four of five factors were similar to the original EDI subscales (Bulimia, Interpersonal Distrust, Maturity Fears, and Perfectionism), although the latter was unique to White girls. The factor structure was generally similar for Black and White girls, although the separate body satisfaction factor and lack of shared variance for the perfectionism factor for Black girls suggest that EDI data obtained from ethnic minority samples may need to be interpreted cautiously. Copyright 2004 by Wiley Periodicals, Inc. Int J Eat Disord 35: 179-189, 2004.

  5. US trends in disability and institutionalization among older Blacks and Whites.

    Science.gov (United States)

    Clark, D O

    1997-01-01

    OBJECTIVES: This study estimated and compared the prevalence of disability and institutionalization in 1982, 1984, and 1989 among the older Black and White populations of the United States. METHODS: Data on over 1100 Blacks and 14,000 Whites in each of a series of three National Long Term Care Surveys were used. RESULTS: Diverging trends for Blacks and Whites led to statistically significant increases in the age- and sex-adjusted odds of disability (19%) and institutionalization (31%) for Blacks relative to Whites. CONCLUSIONS: Black and White disparities in disability appear to have widened, while disparities in institutionalization appear to have narrowed during the decade of the 1980s. PMID:9096549

  6. Explaining Discrepancies in Arrest Rates Between Black and White Male Juveniles

    OpenAIRE

    Fite, Paula J.; Wynn, Porche’; Pardini, Dustin A.

    2009-01-01

    The authors investigated discrepancies in arrest rates between Black and White male juveniles by examining the role of early risk factors for arrest. Two hypotheses were evaluated: (a) Disproportionate minority arrest is due to increased exposure to early risk factors, and (b) a differential sensitivity to early risk factors contributes to disproportionate minority arrest. The study included 481 Black and White boys who were followed from childhood to early adulthood. A higher incidence of ea...

  7. Racial variation in sex steroid hormone concentration in black and white men: a meta-analysis

    OpenAIRE

    Richard, A.; Rohrmann, S.; Zhang, L.; Eichholzer, M.; Basaria, S.; Selvin, E.; Dobs, A. S.; Kanarek, N.; Menke, A.; Nelson, W. G.; Platz, E. A.

    2014-01-01

    Sex steroid hormones are associated with chronic diseases and mortality with risk associations that differ between racial and ethnic groups. However, it is currently unclear whether sex steroid hormone levels differ between black and white men. The aim of this study was to assess racial variation in circulating testosterone, free testosterone, sex hormone-binding globulin (SHBG) and estradiol levels in men. We searched PubMed for articles comparing circulating hormones in black and white men....

  8. A Paired Study of Self-Disclosure of Black and White Inmates

    Science.gov (United States)

    Braithwaite, Ronald

    1973-01-01

    This was an exploratory study to seek out who certain inmates relate to and reveal themselves to. It investigated the similarities and the differences of self-disclosure between a select group of Black and white inmates incarcerated at Marion Federal Penitentiary, Marion, Illinois. (Author)

  9. Comparison of the Psychological Recovery of Black and White Victims of Rape.

    Science.gov (United States)

    Morelli, Patricia H.

    Knowledge of individual differences of victim responses to and recovery from rape is necessary in order to provide for each victim's individual needs. Black women may be exposed to more violence in their culture and may be treated differently than white women. These differences may lead to different recovery patterns between black and white rape…

  10. Colorectal Cancer Screening Uptake's Association With Psychosocial and Sociodemographic Factors Among Homeless Blacks and Whites.

    Science.gov (United States)

    Rogers, Charles R; Robinson, Cendrine D; Arroyo, Cassandra; Obidike, Ogechi Jessica; Sewali, Barrett; Okuyemi, Kolawole S

    2017-12-01

    The homeless represent an extremely disadvantaged population that fare worse than minority groups in access to preventive services and health, and minority groups fare worse than Whites. Early detection screening for colorectal cancer (CRC) saves lives, but empirical data about CRC screening practices among homeless Blacks and Whites are limited. Psychosocial risk factors may serve as a barrier to CRC screening completion among homeless Black individuals. A secondary data analysis of a randomized clinical trial for smoking cessation among homeless smokers was conducted to determine whether psychosocial factors and sociodemographic factors were more highly associated with CRC screening uptake among homeless Blacks than among their White counterparts. Study participants ( N = 124) were surveyed on their CRC screening status, sociodemographic variables, and psychosocial correlate measures including anxiety, depression, hopelessness, depression severity, and perceived stress. Associations between these factors were examined with logistic regression. White participants who were currently disabled/unable to work were 6.2 times more likely to ever receive CRC screening than those who were employed. Black participants with public health insurance coverage were 90% less likely to ever obtain CRC screening than participants without health insurance. Black and White participants had similar levels of anxiety symptoms, depression, and hopelessness, yet depression was the only psychosocial variable negatively associated with CRC screening status. Black and White participants with symptoms of depression were 58% less likely to complete screening than those without depression. Mental health risk and sociodemographic factors may serve as barriers to CRC screening among homeless Blacks and Whites.

  11. Beyond Black and White: The Model Minority Myth and the Invisibility of Asian American Students

    Science.gov (United States)

    Wing, Jean Yonemura

    2007-01-01

    This study of diverse Asian American students at a racially integrated public high school illustrates that the achievement gap is a multi-racial problem that cannot be well understood solely in terms of the trajectories of Black and white students. Asian American students demonstrated a high academic profile on average, but faced difficulties and…

  12. Perception of School Climate: A Comparison of Black and White Teachers within the Same Schools

    Science.gov (United States)

    Wittmer, Joe; Ferinden, Fred

    1970-01-01

    This study compares perceptions of the interpersonal school climate as viewed by black and white teachers. Differences do exist between the two groups regarding the teacher versus different type student andon the teacher versus self. No differences exist in perception of the principal or as to how students should learn. (Author/KJ)

  13. Ethnic Identity and Body Image among Black and White College Females

    Science.gov (United States)

    Baugh, Eboni; Mullis, Ron; Mullis, Ann; Hicks, Mary; Peterson, Gary

    2010-01-01

    Objective: This study examines ethnic identity and body image in black and white college females. Participants: Researchers surveyed 118 students at 2 universities, 1 traditionally white and 1 historically black. Methods: Correlations and multivariate analysis of variance (MANOVA) were used to investigate the relationship between race, ethnic…

  14. Differences in Measures of Personality and Family Environment among Black and White Alcoholics.

    Science.gov (United States)

    Patterson, E.T.; And Others

    1981-01-01

    Scores of Black and White alcoholics were compared using the Minnesota Multiphasic Personality Inventory. Profile differences were not clinically meaningful. However, comparative scores may not rule out racial test bias since better adjustment was indicated for Blacks by the Family Environment Scale. (RC)

  15. Black and White Viewers' Perception and Recall of Occupational Characters on Television.

    Science.gov (United States)

    Appiah, Osei

    2002-01-01

    Examines the differences in how Black and White viewers process messages based on the race of television characters representing five occupations. Notes that findings from male college students suggest that Black viewers have better recall of Black occupational characters than White characters on television. Reveals evidence that both Black and…

  16. Cognitive Abilities of Alzheimer's Patients: Perceptions of Black and White Caregivers

    Science.gov (United States)

    Burns, Robert; Nichols, Linda O.; Graney, Marshall J.; Martindale-Adams, Jennifer; Lummus, Allan

    2006-01-01

    This study compared Black (n = 97) and White (n = 143) family caregivers regarding the relationship between subjective and objective cognitive assessments of Alzheimer's patients from the Memphis site of the NIA/NINR Resources for Enhancing Alzheimer's Caregivers Health (REACH) randomized clinical trial. Black and White caregivers' subjective…

  17. Comparing the Experiences of Black and White Caregivers of Dementia Patients.

    Science.gov (United States)

    Cox, Carole

    1995-01-01

    Using a conceptual stress development model that treats informal supports and competency as potential mediators, examined outcomes of caregiving in samples of black and white caregivers. A perceived lack of informal supports and a sense of incompetency exacerbated stress among black caregivers but had no effects among the white caregivers. (RJM)

  18. Prevalence and comorbidity of major depressive disorder in young black and white women

    NARCIS (Netherlands)

    Franko, DL; Thompson, D; Barton, BA; Dohm, FA; Kraemer, HC; Iachan, R; Crawford, PB; Schreiber, GB; Daniels, [No Value; Striegel-Moore, RH

    Objective This study reports the prevalence and comorbidity of depression in two large samples of black and white young adult women. Method Clinical interviews of participants in a follow-up study of the National Heart, Lung, and Blood Institute Growth and Health Study (NGHS-Wave II; N = 378) were

  19. Participation in School Sports: Risk or Protective Factor for Drug Use among Black and White Students?

    Science.gov (United States)

    Dawkins, Marvin P.; Williams, Mary M.; Guilbault, Michael

    2006-01-01

    This study examined the relationship between participation in school-based sports and drug use among Black and White high school students, using data from participants in the National Educational Longitudinal Survey of 1988 (NELS, NCES, 1988) and follow-up surveys in 1990 and 1992. While previous research produced inconsistent results, the present…

  20. Denying Diversity: Perceptions of Beauty and Social Comparison Processes among Latina, Black, and White Women.

    Science.gov (United States)

    Poran, Maya A.

    2002-01-01

    Investigated Hispanic, black, and white women's conceptions of beauty and perceptions of cultural standards of beauty, noting whether they were engaged in similar social comparison processes (denial of personal disadvantage). Surveys of female college students highlighted major differences in the women's relationships with their bodies and their…

  1. Development of the metabolic syndrome in black and white adolescent girls : A longitudinal assessment

    NARCIS (Netherlands)

    Morrison, JA; Friedman, LA; Harlan, WR; Harlan, LC; Barton, BA; Schreiber, GB; Klein, DJ

    2005-01-01

    Background. The metabolic syndrome, associated with increased risk of type 2 diabetes mellitus and cardiovascular disease, begins to develop during adolescence. Objective. We sought to identify early predictors of the presence of the syndrome at the ages of 18 and 19 years in black and white girls.

  2. Ethnic Differences in Alcohol Use: A Comparison of Black and White College Students in a Small Private University Setting

    Science.gov (United States)

    Gover, Kristie S.

    2010-01-01

    An identified gap in the literature associated with college student alcohol use is the exploration of the problem based on ethnicity, specifically possible differences in use between Black and White college students. The purpose of the present study was to examine differences in alcohol use for Black and White college students at a small private…

  3. Mortality Risk Among Black and White Working Women: The Role of Perceived Work Trajectories

    Science.gov (United States)

    Shippee, Tetyana P.; Rinaldo, Lindsay; Ferraro, Kenneth F.

    2012-01-01

    Objective Drawing from cumulative inequality theory, the authors examine the relationship between perceived work trajectories and mortality risk among Black and White women over 36 years. Method Panel data from the National Longitudinal Survey of Mature Women (1967-2003) are used to evaluate how objective and subjective elements of work shape mortality risk for Black and White women born between 1923 and 1937. Results Estimates from Cox proportional hazards models reveal that Black working women manifest higher mortality risk than White working women even after accounting for occupation, personal income, and household wealth. Perceived work trajectories were also associated with mortality risk for Black women but not for White women. Discussion The findings reveal the imprint of women’s work life on mortality, especially for Black women, and illustrate the importance of considering personal meanings associated with objective work characteristics. PMID:21956101

  4. Prevalence and Characteristics of Bed-Sharing Among Black and White Infants in Georgia.

    Science.gov (United States)

    Salm Ward, Trina C; Robb, Sara Wagner; Kanu, Florence A

    2016-02-01

    To examine: (1) the prevalence and characteristics of bed-sharing among non-Hispanic Black and White infants in Georgia, and (2) differences in bed-sharing and sleep position behaviors prior to and after the American Academy of Pediatrics' 2005 recommendations against bed-sharing. Georgia Pregnancy Risk Assessment Monitoring System (PRAMS) data were obtained from the Georgia Department of Public Health. Analysis was guided by the socioecological model levels of: Infant, Maternal, Family, and Community/Society within the context of race. Data from 2004 to 2011 were analyzed to address the first objective and from 2000 to 2004 and 2006 to 2011 to address the second objective. Rao-Scott Chi square tests and backward selection unconditional logistic regression models for weighted data were built separately by race; odds ratios (OR) and 95 % Confidence Intervals (CIs) were calculated. A total of 6595 (3528 Black and 3067 White) cases were analyzed between 2004 and 2011. Significantly more Black mothers (81.9 %) reported "ever" bed-sharing compared to White mothers (56 %), p Blacks, the final model included infant age, pregnancy intention, number of dependents, and use of Women, Infant and Children (WIC) Services. For Whites, the final model included infant age, maternal age, financial stress, partner-related stress, and WIC. When comparing the period 2000-2004 to 2006-2011, a total of 10,015 (5373 Black and 4642 White cases) were analyzed. A significant decrease in bedsharing was found for both Blacks and Whites; rates of non-supine sleep position decreased significantly for Blacks but not Whites. Continued high rates of bed-sharing and non-supine sleep position for both Blacks and Whites demonstrate an ongoing need for safe infant sleep messaging. Risk profiles for Black and White mothers differed, suggesting the importance of tailored messaging. Specific research and practice implications are identified and described.

  5. Lesbian identities in South Africa : Black and White experiences in Johannesburg

    OpenAIRE

    2011-01-01

    M.A. This dissertation attempts to understand the different meanings attached to lesbian identities by comparing the experiences of black and white lesbian women living in South Africa. Literature of the experiences of black lesbian women, especially in South Africa, is plentiful. Thus, by including white lesbian women in the sample, this dissertation begins to fill a gap in literature and provide some insights into an overall experience of lesbian identity in South Africa. In-depth interv...

  6. Gastric pneumatosis with associated eosinophilic gastritis in four black and white ruffed lemurs (Varecia variegata variegata).

    Science.gov (United States)

    Niederwerder, Megan C; Stalis, Ilse H; Campbell, Gregory A; Backues, Kay A

    2013-03-01

    Pneumatosis cystoides intestinalis (PCI) with associated eosinophilic inflammation was documented in the gastric tissues of four black and white ruffed lemurs (Varecia variegata variegata). Pneumatosis cystoides intestinalis is an uncommon disease described in humans and characterized by multilocular gas-filled cystic spaces located within the wall of the gastrointestinal tract. These cystic spaces can occur in any location along the gastrointestinal tract as well as within the associated connective and lymphatic tissues. The exact cause of this disease is unknown. The four black and white ruffed lemurs described in this case series were captive born and had been housed in zoological institutions at two separate locations. Three of the four cases were female lemurs, and two of the affected lemurs were directly related. The individual disease presentations spanned a 5-yr time period. Two lemurs presented dead with no premonitory signs, whereas the other two lemurs presented with clinical signs of gastrointestinal disease and nonspecific signs of weakness. Gastric pneumatosis, diagnosed either grossly or histopathologically in each of these four lemurs, is described as a subset of PCI in which cystic spaces are localized to the stomach wall. Significant eosinophilic inflammatory infiltrate was identified on histopathology of gastric tissues and found to be associated with the cystic lesions in each lemur. No classic etiology, such as a fungal infection or a parasitic infection, was identified as the cause of the eosinophilic gastritis. This case series demonstrates that gastric pneumatosis with associated eosinophilic gastritis may be a significant gastrointestinal disease in black and white ruffed lemurs.

  7. Ethnic differences in predictors of hearing protection behavior between Black and White workers.

    Science.gov (United States)

    Hong, OiSaeng; Lusk, Sally L; Ronis, David L

    2005-01-01

    The purpose of the study is to determine whether there are ethnic differences in predictors of hearing protection behavior between Black and White workers. The Predictors of Use of Hearing Protection Model (PUHPM) derived from Pender's Health Promotion Model (Pender, 1987) was used as a conceptual model. A total of 2,119 (297 Blacks, 1,822 Whites) were included in the analysis. Internal consistency of instrument items was assessed using theta reliability estimates. Significant predictors of the use of hearing protective devices (HPDs) for Black and White workers and differences in predictors between the two groups were examined using multiple regression with interaction terms. Ethnic differences in scale or individual item scores were assessed using chi-square and t-test analyses. Different factors influenced hearing protection behavior among Black and White workers. The model was much less predictive of Blacks' hearing protection behavior than Whites' (R2 = .12 vs. .36). Since the PUHPM was not as effective in predicting hearing protection behavior for Blacks as for Whites, future studies are needed to expand the PUHPM through qualitative study and to develop culturally appropriate models to identify factors that better predict hearing protection behavior as a basis for developing effective interventions.

  8. Black and white homebuyer, homeowner, and household segregation in the United States, 1990-2010.

    Science.gov (United States)

    Fischer, Mary J

    2013-11-01

    As homeownership has been expanding in the United States over the past several decades, residential segregation between blacks and whites has been declining in most metropolitan areas. However, the degree to which the residential patterns of new homebuyers have mirrored these overall trends in segregation and how the massive increase in home buying has related to changes in segregation has remained largely unexplored. This paper examines the segregation of new black homebuyers from white households, new white homebuyers from black households, and black and white households from each other using Home Mortgage Disclosure Act (HMDA) data from 1992 to 2010 merged with data from the Census and ACS. I find that black homebuyers are less segregated from white households than black homeowners overall and black households in general, providing evidence in support of the spatial assimilation model that would predict better outcomes for homeowners. Also consistent with the spatial assimilation perspective, I found in the multivariate models that increased income parity between blacks and whites and growth in black lending are associated with average declines in black/white household segregation from 1990 to 2010. Although subprime lending was not associated with overall changes in segregation, metropolitan areas with higher percentages of loans to blacks from subprime lenders experienced increases in segregation of both black homeowners from white households as well as white owners from black households. Copyright © 2013. Published by Elsevier Inc.

  9. Recurrent calcium phosphate urolithiasis in a black-and-white ruffed lemur (Varecia variegata).

    Science.gov (United States)

    Cushing, Andrew C; Kollias, George; Knafo, S Emmanuelle; Streeter, Renee; Ahou-Madi, Noha

    2014-03-01

    An adult intact male black-and-white ruffed lemur (Varecia variegata) suffered recurrent bouts of urethral blockage over a 3-yr period caused by calcium phosphate (apatite form) uroliths. Surgical intervention was required in two of the three instances. Various attempts at medical management failed to control formation of the stones, and the underlying etiology remains unclear. In addition, there have been consistent, multiple, unchanging renal mineralizations over the course of the case. Medical management failed to significantly alter the urinary pH; although, to date, no further problems have been noted. To the authors' knowledge, this is the first known report of calcium phosphate stones in a prosimian species.

  10. Formation of black and white smokers in the North Fiji Basin: Sulfur and lead isotope constraints

    Science.gov (United States)

    Kim, J.; Lee, I.; Lee, K.; Yoo, C.; Ko, Y.

    2004-12-01

    The hydrothermal chimneys were recovered from 16o50¡_S triple junction area in the North Fiji Basin. The chimney samples are divided into three groups according to their mineralogy and metal contents; 1) Black smoker, 2) White smoker, 3) Transitional type. Black smoker chimneys are mainly composed of chalcopyrite and pyrite, and are enriched in high temperature elements such as Cu, Co, Mo, and Se. White smoker chimneys consist of sphalerite and marcasite with trace of pyrite and chalcopyrite, and are enriched in low temperature elements (Zn, Cd, Pb, As, and Ga). Transitional chimneys show intermediate characteristics in mineralogy and composition between black and white smokers. Basaltic rocks sampled from the triple junction show wide variation in geochemistry. Trace elements composition of basaltic rocks indicates that the magma genesis in the triple junction area was affected by mixing between N-MORB and E-MORB sources. The sulfur and lead isotope compositions of hydrothermal chimneys show distinct differences between the black and white smokers. Black smokers are depleted in 34S (Øä34S = +0.4 to +4.8) and are low in lead isotope composition (206Pb/204Pb = 18.082 to 18.132; 207Pb/204Pb = 15.440 to 15.481; 208Pb/204Pb = 37.764 to 37.916) compared to white smoker and transitional chimneys (Øä34S = +2.4 to +5.6; 206Pb/204Pb = 18.122 to 18.193; 207Pb/204Pb = 15.475 to 15.554; 208Pb/204Pb = 37.882 to 38.150). The heavier sulfur isotopic fractionation in white smoker can be explained by boiling of hydrothermal fluids and mixing with ambient seawater. The lead isotope compositions of the hydrothermal chimneys indicate that the metal in black and white smokers come from hydrothermal reaction with N-MORB and E-MORB, respectively. Regarding both black and white smoker are located in the same site, the condition of phase separation of hydrothermal fluid that formed white smokers might result from P-T condition of high temperature reaction zone below the hydrothermal

  11. Black and white population change in small American suburbs since World War II: regional differences.

    Science.gov (United States)

    Stahura, J M

    1988-10-01

    "This study examines the relationship between black population concentration (% black), black population change and white population change for small American suburbs for the 1950-1980 period. Linear, tipping point (curvilinear) and interaction models of racial transition are evaluated for each decade by region (South and non-South), controlling for several other suburban characteristics (age, annexation and distance to the Central Business District) which may affect both black and white population change. The analyses show that racial transition in suburbs involves the parallel development of white and black populations with mainly weak and complex causal linkages which are sensitive to broader suburbanization patterns." excerpt

  12. Confirmatory Factor Analysis of the 12- Item Center for Epidemiologic Studies Depression Scale (CES-D among Blacks and Whites

    Directory of Open Access Journals (Sweden)

    Shervin Assari

    2016-11-01

    Full Text Available Background: The Center for Epidemiologic Studies Depression (CES-D scale is one of the most widely used tools to measure depressive symptoms in epidemiological studies. Given the importance of cross-racial measurement equivalence of CES-D scale for research, we performed confirmatory factor analysis of 12 - item CES-D in a nationally representative sample of Black and White adults in the United States.Methods: We used data from the National Survey of American Life (NSAL, 2001-2003. A total number of 3,570 Blacks (African Americans and 891 non-Hispanic Whites were included in the present study. Confirmatory factor analysis was carried out on the 12-item CES-D scale using multi-group structural equation modeling (SEM.Results: For both Blacks and Whites, best fitting model was found to be the 3-factor model, indicating invariance of factor structure between Blacks and Whites. Statistically different fit of the models with and without constraints indicated lack of invariance of factor loadings between Blacks and Whites. Some of the positive (i.e. as good, and hopeful and interpersonal (i.e. people were unfriendly items showed poor loadings, even in the 3- factor solution that allowed separate domains for positive affect, negative affect, and interpersonal problems. Despite the good fit of our final model, more items (i.e. as good, hopeful, keeping mind, and everything effort had poor loadings in Blacks than Whites (i.e. as good.Conclusion: There is invariance in factor structure but lack of invariance in factor/item loadings among Blacks and Whites. These findings have implications for cross-racial studies of depressive symptoms using CES-D among Blacks and Whites. Further research is warranted to scrutinize the role of socio-economics and culture in explaining lack of invariance of CES-D scale between Blacks and Whites.

  13. Confirmatory Factor Analysis of the 12-Item Center for Epidemiologic Studies Depression Scale among Blacks and Whites.

    Science.gov (United States)

    Assari, Shervin; Moazen-Zadeh, Ehsan

    2016-01-01

    The Center for Epidemiologic Studies Depression (CES-D) scale is one of the most widely used tools to measure depressive symptoms in epidemiological studies. Given the importance of cross-racial measurement equivalence of the CES-D scale for research, we performed confirmatory factor analysis (CFA) of the 12-item CES-D in a nationally representative sample of Black and White adults in the United States. We used data from the National Survey of American Life (NSAL), 2001-2003. A total number of 3570 Blacks (African-Americans) and 891 non-Hispanic Whites were included in the present study. CFA was carried out on the 12-item CES-D scale using multi-group structural equation modeling. For both Blacks and Whites, the best fitting model was found to be the 3-factor model, indicating invariance of factor structure between Blacks and Whites. A statistically different fit of the models with and without constraints indicated lack of invariance of factor loadings between Blacks and Whites. Some of the positive (i.e., " as good " and " hopeful ") and interpersonal (i.e., " people were unfriendly ") items showed poor loadings, even in the 3-factor solution that allowed separate domains for positive affect, negative affect, and interpersonal problems. Despite the good fit of our final model, more items (i.e., " as good ," " hopeful ," " keeping mind ," and " everything effort ") had poorer loadings in Blacks than Whites (i.e., " as good "). There is invariance in factor structure but lack of invariance in factor/item loadings between Blacks and Whites. These findings have implications for cross-racial studies of depressive symptoms using CES-D scale among Blacks and Whites. Further research is warranted to scrutinize the role of socioeconomics and culture in explaining the lack of invariance of the CES-D scale between Blacks and Whites.

  14. Can black-and-white ruffed lemurs (Varecia variegata) solve object permanence tasks?

    Science.gov (United States)

    Mallavarapu, Suma; Perdue, Bonnie M; Stoinski, Tara S; Maple, Terry L

    2013-04-01

    We examined object permanence in black-and-white-ruffed lemurs (Varecia variegata) at Zoo Atlanta. A series of visible and invisible displacement tasks with suitable controls were presented to five adult subjects. Subjects performed significantly above chance on all regular tasks, except for the double invisible displacements. Subjects failed visible and invisible controls. Failure on the control trials did not appear to be because subjects used the "last box touched" strategy (subjects did not choose the last box touched significantly more than expected by chance). However, a substantial percentage of choices was made to the last box touched by the experimenter. There was no significant difference between this percentage, and the percentage of choices made to the baited box (on both visible and invisible controls), which indicates that subjects were drawn to both boxes which the experimenter visited/touched, and thus failed the controls. Based on the results from the present study, we believe that there is no evidence that black-and-white ruffed lemurs understand visible and invisible tasks in the traditional object permanence battery. © 2013 Wiley Periodicals, Inc.

  15. Explaining discrepancies in arrest rates between Black and White male juveniles.

    Science.gov (United States)

    Fite, Paula J; Wynn, Porche'; Pardini, Dustin A

    2009-10-01

    The authors investigated discrepancies in arrest rates between Black and White male juveniles by examining the role of early risk factors for arrest. Two hypotheses were evaluated: (a) Disproportionate minority arrest is due to increased exposure to early risk factors, and (b) a differential sensitivity to early risk factors contributes to disproportionate minority arrest. The study included 481 Black and White boys who were followed from childhood to early adulthood. A higher incidence of early risk factors accounted for racial differences related to any juvenile arrest, as well as differences in violence- and theft-related arrests. However, increased exposure to early risk factors did not explain race differences in drug-related arrests. Minimal support was found for the hypothesis that a differential sensitivity to risk factors accounts for disproportionate rate of minority male arrests. In sum, most racial discrepancies in juvenile male arrests were accounted for by an increased exposure to childhood risk factors. Specifically, Black boys were more likely to display early conduct problems and low academic achievement and experience poor parent-child communication, peer delinquency, and neighborhood problems, which increased their risk for juvenile arrest. (c) 2009 APA, all rights reserved.

  16. Epidemiology of infant death among black and white non-Hispanic populations in Hampton Roads, Virginia.

    Science.gov (United States)

    Emuren, Leonard; Chauhan, Suneet; Vroman, Richard; Beydoun, Hind

    2012-05-01

    To evaluate the presence of racial disparities in infant mortality rates and assess risk factors for infant death among black and white populations in Hampton Roads, Virginia. A retrospective study with secondary analyses of linked birth/death certificate data was conducted using a sample of 201,610 live-born infants and 1659 infant deaths identified between January 1, 1999 and December 31, 2008 in Hampton Roads. Infant, neonatal, and postneonatal mortality rates were significantly (P black compared with white populations. Racial disparities were noted whereby black infants were significantly (P black infants dying in the first year of life than white infants. Among blacks, the odds of infant death were inversely related to maternal education. Among whites, the odds of infant death declined with increasing parity. Among black and white populations, history of child death, presence of maternal morbidities and the Kotelchuck Maternal Utilization of Prenatal Care Index were key determinants of infant death. Black infants are at higher odds of dying compared with white infants in Hampton Roads, Virginia. Continued efforts should target prenatal care, preterm delivery, and low-birth-weight infants and neonates to reduce infant mortality rates.

  17. Recognition memory for colored and black-and-white scenes in normal and color deficient observers (dichromats).

    Science.gov (United States)

    Brédart, Serge; Cornet, Alyssa; Rakic, Jean-Marie

    2014-01-01

    Color deficient (dichromat) and normal observers' recognition memory for colored and black-and-white natural scenes was evaluated through several parameters: the rate of recognition, discrimination (A'), response bias (B"D), response confidence, and the proportion of conscious recollections (Remember responses) among hits. At the encoding phase, 36 images of natural scenes were each presented for 1 sec. Half of the images were shown in color and half in black-and-white. At the recognition phase, these 36 pictures were intermixed with 36 new images. The participants' task was to indicate whether an image had been presented or not at the encoding phase, to rate their level of confidence in his her/his response, and in the case of a positive response, to classify the response as a Remember, a Know or a Guess response. Results indicated that accuracy, response discrimination, response bias and confidence ratings were higher for colored than for black-and-white images; this advantage for colored images was similar in both groups of participants. Rates of Remember responses were not higher for colored images than for black-and-white ones, whatever the group. However, interestingly, Remember responses were significantly more often based on color information for colored than for black-and-white images in normal observers only, not in dichromats.

  18. Evidence of social learning in black-and-white ruffed lemurs (Varecia variegata).

    Science.gov (United States)

    Stoinski, T S; Drayton, L A; Price, E E

    2011-06-23

    Although many studies have examined social learning capabilities in apes and monkeys, experiments involving prosimians remain largely absent. We investigated the potential for social learning in black-and-white ruffed lemurs using a two-action foraging task. Eight individuals were divided into two experimental groups and exposed to conspecifics using one of two techniques to access food. Subjects were then given access to the apparatus and their retrieval techniques were recorded and compared. All subjects made their first retrieval using the technique they observed being demonstrated, and there were significant differences between the two groups in their overall response patterns. These results suggest that prosimians are capable of social learning and that additional long-term field studies may reveal the presence of behavioural traditions similar to those found in other primates.

  19. Thinking in Black and White: Conscious thought increases racially biased judgments through biased face memory.

    Science.gov (United States)

    Strick, Madelijn; Stoeckart, Peter F; Dijksterhuis, Ap

    2015-11-01

    It is a common research finding that conscious thought helps people to avoid racial discrimination. These three experiments, however, illustrate that conscious thought may increase biased face memory, which leads to increased judgment bias (i.e., preferring White to Black individuals). In Experiments 1 and 2, university students formed impressions of Black and White housemate candidates. They judged the candidates either immediately (immediate decision condition), thought about their judgments for a few minutes (conscious thought condition), or performed an unrelated task for a few minutes (unconscious thought condition). Conscious thinkers and immediate decision-makers showed a stronger face memory bias than unconscious thinkers, and this mediated increased judgment bias, although not all results were significant. Experiment 3 used a new, different paradigm and showed that a Black male was remembered as darker after a period of conscious thought than after a period of unconscious thought. Implications for racial prejudice are discussed. Copyright © 2015 Elsevier Inc. All rights reserved.

  20. Prevalence and correlates of pubic hair grooming among low-income Hispanic, Black, and White women.

    Science.gov (United States)

    DeMaria, Andrea L; Berenson, Abbey B

    2013-03-01

    The purpose of this paper was to describe pubic hair grooming behaviors (shaving, waxing, trimming or dyeing) and the extent to which grooming was related to demographic characteristics and sexual history among low-income Hispanic, Black, and White women. Data were collected from 1677 women aged 16-40 years between July 2010 and August 2011 as part of a larger study. Participants completed a cross-sectional written survey. Multivariable analyses were used to identify correlates of pubic hair grooming. Being a current groomer was associated with being White, a younger age, under or normal weight, having a yearly household income >$30,000, and having 5 or more lifetime sexual partners. Overall, we discovered pubic hair grooming was extremely common among women of varying demographics. It is important for health and research professionals to understand pubic hair grooming practices so they can address behavioral and clinical concerns. Published by Elsevier Ltd.

  1. Leg muscle power in 12-year-old black and white Tunisian football players.

    Science.gov (United States)

    Ben Ayed, Karim; Latiri, Imed; Dore, Eric; Tabka, Zouhair

    2011-04-01

    This study examined leg muscle power of young male Tunisian black and white football players and extended the analysis to determine whether there is a relationship between cycling peak power output (PPO) and some field tests. A total of 113 children (white group (WG) = n = 56; black group (BG) = n = 57) participated in this investigation. Anthropometric data included age, body mass (BM), height, leg length (LL), body mass index (BMI), and leg muscle volume (LMV). Cycling PPO was measured including a force-velocity test. Peak power output (PPO; W and W/kg), Fopt (optimal braking force), and Vopt (optimal velocity) were significantly higher in the WG compared with the BG (p force-velocity test as explanatory factors showed that 33% of the variance of PPO of BG was explained by qualitative factors that may be related to cycling skill, muscle composition, and socioeconomic and training status.

  2. Anger in young black and white workers: effects of job control, dissatisfaction, and support.

    Science.gov (United States)

    Fitzgerald, Sheila T; Haythornthwaite, Jennifer A; Suchday, Sonia; Ewart, Craig K

    2003-08-01

    This cross-sectional study tested the hypothesis that characteristics of work that contribute to job strain also increase anger in young service-sector workers. A new measure of anger directed at coworkers, supervisors, and customers was regressed on job strain indices (job control, coworker and supervisor support, dissatisfaction) in models that controlled for dispositional negative affect and work status. Results in a sample of 230 young Black and White men and women revealed that low levels of job control and social support, and high levels of job dissatisfaction, were independently associated with increased work-related anger. Moreover, social support moderated the impact of low job control on anger directed at coworkers. Findings indicate that anger experienced at work may be an early marker of job stress, which has been prospectively related to cardiovascular disease.

  3. Relative deprivation and internal migration in the United States: A comparison of black and white men

    Science.gov (United States)

    Flippen, Chenoa

    2013-01-01

    While the link between geographic and social mobility has long been a cornerstone of sociological approaches to migration, recent research has cast doubt on the economic returns to internal U.S. migration. Moreover, important racial disparities in migration patterns remain poorly understood. Drawing on data from the 2000 census, I reappraise the link between migration and social mobility by taking relative deprivation into consideration. I examine the association between migration, disaggregated by region of origin and destination, and absolute and relative earnings and occupational prestige, separately by race. Findings lend new insight into the theoretical and stratification implications of growing racial disparities in migration patterns; while both blacks and whites who move north-south generally average lower absolute incomes than their stationary northern peers, they enjoy significantly higher relative social position. Moreover, the relative “gains” to migration are substantially larger for blacks than whites. The opposite patterns obtain for south-north migration. PMID:24391221

  4. The association of alcohol consumption with tobacco use in Black and White college students.

    Science.gov (United States)

    Ames, Steven C; Stevens, Susanna R; Werch, Chudley E; Carlson, Joan M; Schroeder, Darrell R; Kiros, Gebre-Egziabher; Kershaw, Josephine; Patten, Christi A; Ebbert, Jon O; Offord, Kenneth P

    2010-06-01

    This study explored the association of alcohol and tobacco use among college students. A survey was administered in 2004 to 2,189 Black and White students from the southeastern United States. The prevalence of alcohol and tobacco use, tobacco use characteristics according to level of alcohol consumed, and percentage of students using tobacco according to type of alcoholic beverages consumed were evaluated. The interaction of race and gender with alcohol and tobacco use was explored. Our findings extend prior investigations that have found alcohol use associated with smoking and suggest attention be paid to the relation of alcohol to other forms of tobacco. Racial and gender differences are highlighted. This study was funded by Mayo Clinic. The study's limitations were noted.

  5. Stereotype Threat Among Black and White Women in Health Care Settings

    Science.gov (United States)

    Abdou, Cleopatra M.; Fingerhut, Adam W.

    2016-01-01

    The first of its kind, the present experiment applied stereotype threat—the threat of being judged by or confirming negative group-based stereotypes—to the health sciences. Black and White women (N = 162) engaged in a virtual health care situation. In the experimental condition, one’s ethnic identity and negative stereotypes of Black women specifically were made salient. As predicted, Black women in the stereotype threat condition who were strongly identified as Black (in terms of having explored what their ethnic identity means to them and the role it plays in their lives) reported significantly greater anxiety while waiting to see the doctor in the virtual health care setting than all other women. It is hypothesized that stereotype threat experienced in health care settings is one overlooked social barrier contributing to disparities in health care utilization and broader health disparities among Black women. PMID:25045944

  6. Comparison of Prevalence and Types of Mutations in Lung Cancers Among Black and White Populations.

    Science.gov (United States)

    Campbell, Joshua D; Lathan, Christopher; Sholl, Lynette; Ducar, Matthew; Vega, Mikenah; Sunkavalli, Ashwini; Lin, Ling; Hanna, Megan; Schubert, Laura; Thorner, Aaron; Faris, Nicholas; Williams, David R; Osarogiagbon, Raymond U; van Hummelen, Paul; Meyerson, Matthew; MacConaill, Laura

    2017-06-01

    Lung cancer is the leading cause of cancer death in the United States in all ethnic and racial groups. The overall death rate from lung cancer is higher in black patients than in white patients. To compare the prevalence and types of somatic alterations between lung cancers from black patients and white patients. Differences in mutational frequencies could illuminate differences in prognosis and lead to the reduction of outcome disparities by more precisely targeting patients' treatment. Tumor specimens were collected from Baptist Cancer Center (Memphis, Tennessee) over the course of 9 years (January 2004-December 2012). Genomic analysis by massively parallel sequencing of 504 cancer genes was performed at Dana-Farber Cancer Institute (Boston, Massachusetts). Overall, 509 lung cancer tumors specimens (319 adenocarcinomas; 142 squamous cell carcinomas) were profiled from 245 black patients and 264 white patients. The frequencies of genomic alterations were compared between tumors from black and white populations. Overall, 509 lung cancers were collected and analyzed (273 women [129 black patients; 144 white patients] and 236 men [116 black patients; 120 white patients]). Using 313 adenocarcinomas and 138 squamous cell carcinomas with genetically supported ancestry, overall mutational frequencies and copy number changes were not significantly different between black and white populations in either tumor type after correcting for multiple hypothesis testing. Furthermore, specific activating alterations in members of the receptor tyrosine kinase/Ras/Raf pathway including EGFR and KRAS were not significantly different between populations in lung adenocarcinoma. These results demonstrate that lung cancers from black patients are similar to cancers from white patients with respect to clinically actionable genomic alterations and suggest that clinical trials of targeted therapies could significantly benefit patients in both groups.

  7. Jim Crow and Premature Mortality Among the US Black and White Population, 1960–2009

    Science.gov (United States)

    Krieger, Nancy; Chen, Jarvis T.; Coull, Brent A.; Beckfield, Jason; Kiang, Mathew V.; Waterman, Pamela D.

    2016-01-01

    Background Scant research has analyzed the health impact of abolition of Jim Crow (ie, legal racial discrimination overturned by the US 1964 Civil Rights Act). Methods We used hierarchical age–period–cohort models to analyze US national black and white premature mortality rates (death before 65 years of age) in 1960–2009. Results Within a context of declining US black and white premature mortality rates and a persistent 2-fold excess black risk of premature mortality in both the Jim Crow and non-Jim Crow states, analyses including random period, cohort, state, and county effects and fixed county income effects found that, within the black population, the largest Jim Crow-by-period interaction occurred in 1960–1964 (mortality rate ratio [MRR] = 1.15 [95% confidence interval = 1.09–1.22), yielding the largest overall period-specific Jim Crow effect MRR of 1.27, with no such interactions subsequently observed. Furthermore, the most elevated Jim Crow-by-cohort effects occurred for birth cohorts from 1901 through 1945 (MRR range = 1.05–1.11), translating to the largest overall cohort-specific Jim Crow effect MRRs for the 1921–1945 birth cohorts (MRR ~ 1.2), with no such interactions subsequently observed. No such interactions between Jim Crow and either period or cohort occurred among the white population. Conclusion Together, the study results offer compelling evidence of the enduring impact of both Jim Crow and its abolition on premature mortality among the US black population, although insufficient to eliminate the persistent 2-fold black excess risk evident in both the Jim Crow and non-Jim Crow states from 1960 to 2009. PMID:24825344

  8. Associations between socio-economic status and dietary patterns in US black and white adults.

    Science.gov (United States)

    Kell, K P; Judd, S E; Pearson, K E; Shikany, J M; Fernández, J R

    2015-06-14

    Socio-economic status (SES) has been associated with measures of diet quality; however, such measures have not directly captured overall eating practices in individuals. Based on the factor analysis of fifty-six food groups from FFQ, associations between patterns of food consumption and SES were examined in a nationwide sample of 17,062 black (34·6%) and white participants (age >45 years) from the REasons for Geographic And Racial Differences in Stroke (REGARDS) study. Logistic regression models adjusted for age, sex, racial group and geographic region were used to examine adherence to five emergent dietary patterns (convenience, plant-based, sweets/fats, southern and alcohol/salads) according to four levels each of individual education, household income and community-level SES. Further models assessed adherence to these dietary patterns by racial group, and an overall model including both racial groups examined whether the relationships between SES and adherence to these dietary patterns differed among black and white participants. For all the three measures of SES, higher SES had been associated with greater adherence to plant-based and alcohol/salads patterns, but lower adherence to sweets/fats and southern patterns. Statistically significant differences between black and white participants were observed in the associations between household income and adherence to alcohol/salads, individual education and adherence to plant-based and sweets/fats, and community SES and adherence to convenience patterns. As adherence to dietary patterns has been shown to be associated with health outcomes in this population (e.g. stroke), the present study offers valuable insight into behavioural and environmental factors that may contribute to health disparities in the diverse US population.

  9. Epidemiology of Theileria bicornis among black and white rhinoceros metapopulation in Kenya.

    Science.gov (United States)

    Otiende, Moses Y; Kivata, Mary W; Makumi, Joseph N; Mutinda, Mathew N; Okun, Daniel; Kariuki, Linus; Obanda, Vincent; Gakuya, Francis; Mijele, Dominic; Soriguer, Ramón C; Alasaad, Samer

    2015-01-17

    A huge effort in rhinoceros conservation has focused on poaching and habitat loss as factors leading to the dramatic declines in the endangered eastern black rhinoceros (Diceros bicornis michaeli) and the southern white rhinoceros (Ceratotherium simum simum). Nevertheless, the role disease and parasite infections play in the mortality of protected populations has largely received limited attention. Infections with piroplasmosis caused by Babesia bicornis and Theileria bicornis has been shown to be fatal especially in small and isolated populations in Tanzania and South Africa. However, the occurrence and epidemiology of these parasites in Kenyan rhinoceros is not known. Utilizing 18S rRNA gene as genetic marker to detect rhinoceros infection with Babesia and Theileria, we examined blood samples collected from seven rhinoceros populations consisting of 114 individuals of black and white rhinoceros. The goal was to determine the prevalence in Kenyan populations, and to assess the association of Babesia and Theileria infection with host species, age, sex, location, season and population mix (only black rhinoceros comparing to black and white rhinoceros populations). We did not detect any infection with Babesia in the sequenced samples, while the prevalence of T. bicornis in the Kenyan rhinoceros population was 49.12% (56/114). White rhinoceros had significantly higher prevalence of infection (66%) compared to black rhinoceros (43%). The infection of rhinoceros with Theileria was not associated with animal age, sex or location. The risk of infection with Theileria was not higher in mixed species populations compared to populations of pure black rhinoceros. In the rhinoceros studied, we did not detect the presence of Babesia bicornis, while Theileria bicornis was found to have a 49.12% prevalence with white rhinoceros showing a higher prevalence (66%) comparing with black rhinoceros (43%). Other factors such as age, sex, location, and population mix were not found to

  10. Attitudes, Behaviors, and Effectiveness of Black and White Leaders of Simulated Problem Solving Groups of Varying Size and Racial Composition.

    Science.gov (United States)

    Hill, Walter A.; Allen, William R.

    A field experiment was used to investigate the effects, if any, of changing group size and racial composition on the attitudes, behaviors, and effectiveness of black and white leaders. Subjects were 288 naval recruits, half black and half white, performing two tasks which were watched by a pair of racially mixed observers through a one-way mirror.…

  11. Relationship between negative social reactions to sexual assault disclosure and mental health outcomes of black and white female survivors.

    Science.gov (United States)

    Hakimi, Dehnad; Bryant-Davis, Thema; Ullman, Sarah E; Gobin, Robyn L

    2016-12-12

    This study investigates the effect of race on the relationship between negative reactions to sexual assault disclosure and the psychological sequelae such as posttraumatic stress disorder (PTSD), depression, and problem drinking in female sexual assault survivors. Using hierarchical regression in an ethnically diverse community sample of 622 female adult sexual assault victims, we assessed for sexual assault; negative reactions to sexual assault disclosure; and symptom severity for PTSD, depression, and problem drinking. Negative social reactions to sexual assault disclosures were significantly associated with negative mental health outcomes across race. Race moderated the influence of negative disclosure reactions on psychological symptoms; however, the moderation was not similar across racial groups and psychological outcome measures. Although Black and White survivors evidenced distress through depression, PTSD, and substance use, Black women who received low to moderate negative reactions to their disclosures of assault were more likely to show increases in PTSD and depression whereas high negative reactions to disclosure were related to higher PTSD and depression similarly for both Black and White women. In addition, Black and White women who experienced more negative social reactions had greater substance abuse, with no difference by race. The results provide further support for detrimental effects of negative reactions on Black and White survivors and highlight the importance of educating people in the community about sexual assault and how to respond in more supportive ways. (PsycINFO Database Record (c) 2016 APA, all rights reserved).

  12. Relationships between mastitis and functional longevity in Danish Black and White dairy cattle estimated using survival analysis

    NARCIS (Netherlands)

    Neerhof, H.J.; Madsen, P.; Ducrucq, V.; Vollema, A.R.; Jensen, I.; Korsgaard, I.R.

    2000-01-01

    The relationship between mastitis and functional longevity was assessed with survival analysis on data of Danish Black and White dairy cows. Different methods of including the effect of mastitis treatment on the culling decision by a farmer in the model were compared. The model in which mastitis

  13. Lipoprotein and apolipoprotein differences in black and white girls - The National Heart, Lung, and Blood Institute Growth and Health Study

    NARCIS (Netherlands)

    Sprecher, DL; Morrison, JA; Simbartl, LA; Schreiber, GB; Sabry, ZI; Biro, FM; Barton, BA

    Objective: To define racial differences in lipoprotein and apolipoprotein levels in girls aged 9 to 10 years. Design: Baseline analysis of a prospective cohort study. Setting: Three clinical sites. Subjects: A total of 1871 black and white girls, aged 9 to 10 years, with complete maturation data

  14. An Unknown, but Key Player in the Television Market: The Television Retailer and the Case of Black and White TV Sets in France (1950-1987)

    NARCIS (Netherlands)

    Gaillard, Isabelle

    2013-01-01

    abstractThis article offers insights into how black and white TV sets were sold in France from 1948 to the mid 80s. During this period, the black and white television set shifted from being an expensive and breakable technical object to a commonplace, mass consumer durable good. The article

  15. Vitamin D status of black and white Americans and changes in vitamin D metabolites after varied doses of vitamin D supplementation

    Science.gov (United States)

    Background. Controversy exists over the cause of disparate circulating 25-hydroxyvitaminD (25OHD) between black and white Americans. Objective: To determine whether there are differences in total and directly measured free 25OHD between black and white American adults and to assess the degree to w...

  16. Interstitial cell tumor in a black-and-white ruffed lemur (Varecia variegatus variegatus).

    Science.gov (United States)

    Neiffer, D L; Klein, E C

    2001-06-01

    A 14.5-yr-old, male black-and-white ruffed lemur (Varecia variegatus variegatus) presented for acute enlargement of the left testicle and hemiscrotum. Physical examination also revealed poor pelage quality with short guard hairs, sparse undercoat, and areas of alopecia. Increased aggression was also reported. A unilateral, open orchiectomy was performed, with the left testicle, epidydymis, associated vaginal tunic, and attached spermatic cord removed. Microscopic evaluation was consistent with an interstitial cell tumor, with many morphologic features similar to this neoplasm in people. No overt histopathologic criteria of malignancy were present. Following orchiectomy, gradual improvement in pelage quality was noted and was considered almost normal by 5 mo postoperative. In contrast with the aggressive preoperative behavior, the lemur was extremely submissive for 3 mo following the surgery. Gradual return to normal behavior and social status occurred over the next 2 mo. Multiple follow-up examinations and radiographs revealed no evidence of metastasis, and biopsy of the remaining testicle 4 mo later revealed no evidence of neoplasia. Serial measurements of testosterone and estradiol revealed levels within the range of those for other ruffed lemurs, as were repeated measurements taken of the remaining testicle. At 19 mo postoperative, the lemur had a coat quality considered nearly normal and maintained its historical social position in the lemur group without abnormal aggressive behavior.

  17. Captive breeding, reintroduction, and the conservation genetics of black and white ruffed lemurs, Varecia variegata variegata.

    Science.gov (United States)

    Wyner, Y M; Amato, G; Desalle, R

    1999-12-01

    A character-based phylogenetic species concept approach was used to examine conservation unit status for three wild populations of black and white ruffed lemurs, Varecia vareigata variegata, from Betampona (N = 3), Manombo (N = 6), and Ranomafana (N = 14), Madagascar. Population aggregation analysis was performed on 548 bp from the control region (D-loop) of the mitochondrial DNA (mtDNA). Twenty-one diagnostic sites were found to differentiate the Betampona (northern) population from the Manombo/Ranomafana (southern) populations. Additionally, individuals from the North American captive population (N = 11) and from Parc Ivoloina, Madagascar (N = 6) were examined for the same mtDNA fragment. The captive animals more closely resembled the southern populations and the Parc Ivoloina animals were more similar to the northern population. However, the inclusion of these ex situ animals reduced the number of diagnostic sites differentiating the northern and southern populations. Our genetic data were used to assess the ongoing management strategy for reintroducing individuals into the Betampona population and for introducing new founders into the ex situ population. This study demonstrates the utility of combining genetic information with a consideration of conservation priorities in evaluating the implementation of management strategies.

  18. The behavioral repertoire of the black-and-white ruffed lemur, Varecia variegata variegata (Primates: Lemuridae).

    Science.gov (United States)

    Pereira, M E; Seeligson, M L; Macedonia, J M

    1988-01-01

    A stable social group of 7 semifree-ranging black-and-white ruffed lemurs (Varecia variegata variegata) was studied for 4 months to catalog the behavioral repertoire of this species. Observations focussed on particular aspects of behavior were conducted before and after this 4-month period to supplement information gathered. Behavior in 11 major categories is detailed: postures, terrestrial locomotion, arboreal locomotion, feeding behavior, vocalizations, scent-marking, affinitive social behavior, agonistic social behavior, play behavior, sexual behavior, and parental behavior. Ruffed lemurs frequently used body positions and locomotor patterns unusual among lemurids, including bipedal hanging and long-descent leaps. These behaviors reinforce dental evidence that Varecia are among the most frugivorous of the Malagasy lemurs. Low intragroup cohesion, infrequent social interaction, and antiphonal use of several long-distance vocalizations suggest that ruffed lemurs naturally exhibit fission-fusion sociality. Social structure based on interindividual familiarity probably extends across foraging parties for several of the diurnally active lemurs; however, thus far only Varecia seems likely to exhibit fission-fusion sociality analogous to that seen in spider monkeys and chimpanzees.

  19. Prevalence of colon polyps detected by colonoscopy screening in asymptomatic black and white patients

    Science.gov (United States)

    Lieberman, David; Holub, Jennifer; Moravec, Matthew; Eisen, Glenn; Peters, Dawn; Morris, Cynthia

    2013-01-01

    Context Compared to whites, Black men and women have a higher incidence and mortality from colorectal cancer and may develop cancer at a younger age. Colorectal cancer screening might be less effective in Blacks, if there are racial differences in the age-adjusted prevalence and location of cancer precursor lesions. Objectives To determine and compare the prevalence rates and location of polyp(s) >9mm in asymptomatic Blacks and whites who receive colonoscopy screening. Design, Setting, and Patients Colonoscopy data were prospectively collected from 67 practice sites in the United States using a computerized endoscopic report generator from 2004–2005. Data were transmitted to a central data repository, where all asymptomatic whites (n = 80,061) and Blacks (n = 5464) who received screening colonoscopy were identified. Main outcome measures Prevalence and location of polyp(s) >9mm, adjusted for age, gender, and family history of colorectal cancer in a multivariate analysis. Results Both Black men and women had a higher prevalence of polyp(s) >9mm (7.7 versus 6.2%; p 9mm (OR 1.133; 95% CI 0.93,1.38). However, in a sub-analysis of patients over age 60 years, proximal polyps >9mm were more likely in Black men (p = 0.026) and women (p9mm, and Black over age 60 years are more likely to proximal polyps >9mm. PMID:18812532

  20. Serum adiponectin and coronary heart disease risk in older Black and White Americans.

    Science.gov (United States)

    Kanaya, Alka M; Wassel Fyr, Christina; Vittinghoff, Eric; Havel, Peter J; Cesari, Matteo; Nicklas, Barbara; Harris, Tamara; Newman, Anne B; Satterfield, Suzanne; Cummings, Steve R

    2006-12-01

    Adiponectin may influence the risk of coronary heart disease (CHD) independently of traditional cardiovascular risk factors. Because body composition and adiponectin levels vary by race, we examined the relationship of adiponectin with prevalent and incident CHD in a cohort of older Black and White adults. We conducted a cross-sectional and prospective cohort study at two U.S. clinical centers. Participants included 3075 well-functioning adults between ages 70 and 79 yr enrolled in the Health, Aging, and Body Composition study. Prevalent CHD was defined as history of myocardial infarction, coronary artery bypass graft, percutaneous coronary transluminal angioplasty, angina, or major electrocardiogram abnormalities. After excluding those with prevalent CHD, incident CHD was defined as hospitalized myocardial infarction or CHD death. At baseline, 602 participants (19.6%) had CHD. During 6 yr of follow-up, 262 (10.6%) incident CHD events occurred. Whites had higher median adiponectin than Blacks (12 vs. 8 microg/ml, P Blacks, a doubling of adiponectin was associated with a 40% higher risk of both prevalent CHD (odds ratio, 1.41; 95% confidence interval, 1.11-1.78) and incident CHD (hazards ratio, 1.37; 95% confidence interval, 1.01-1.87) after adjusting for explanatory variables. High circulating concentrations of adiponectin were associated with higher risk of CHD in older Blacks, even accounting for traditional CHD risk factors.

  1. Leachates analysis of glass from black and white and color televisions sets

    Directory of Open Access Journals (Sweden)

    Radovan Kukla

    2012-01-01

    Full Text Available The aim of work was to determine the content of selected elements in the glass from color and black and white television (TV sets. The amount of back taken TV sets in the Czech Republic increases annualy, which is associated with higher production of the waste glass. Currently there is 1.4 television sets for each household and the number of it should increase in future, because of higher standard of living and new technologies used. Waste glass treatment or landfilling may present, because of composition of the waste glass threat to the environment. One of the indicators of the polution from waste glass is leachate analysis, which can show us the content of hazardous substances in the waste glass, which can be released to the environment. A qualitative analysis of leachate samples was carried out by UV-VIS spectrophotometer. The results showed concentration of potencionaly hazardous substances contained in leachate samples. This was especially content of aluminum, cadmium, chromium, copper, molybdenum, nickel, lead, tin and zinc. Results of analyzes of the aqueous extract of glass were confronted with the limits specified in the currently valid legislation. Based on the results there is clear that in the case of landfilling of the glass from television sets, there is possibility of the contamination of landfill leachate by the elements, which are presented in the glass.

  2. Comparison of CYP1A2 and NAT2 phenotypes between black and white smokers.

    Science.gov (United States)

    Muscat, Joshua E; Pittman, Brian; Kleinman, Wayne; Lazarus, Philip; Stellman, Steven D; Richie, John P

    2008-10-01

    The lower incidence rate of transitional cell carcinoma of the urinary bladder in blacks than in whites may be due to racial differences in the catalytic activity of enzymes that metabolize carcinogenic arylamines in tobacco smoke. To examine this, we compared cytochrome P4501A2 (CYP1A2) and N-acetyltransferase-2 activities (NAT2) in black and white smokers using urinary caffeine metabolites as a probe for enzyme activity in a community-based study of 165 black and 183 white cigarette smokers. The paraxanthine (1,7-dimethylxanthine, 17X)/caffeine (trimethylxanthine, 137X) ratio or [17X+1,7-dimethyluric acid (17U)]/137X ratio was used as an indicator of CYP1A2 activity. The 5-acetyl-amino-6-formylamino-3-methyluracil (AFMU)/1-methylxanthine (1X) ratio indicated NAT2 activity. The odds ratio for the slow NAT2 phenotype associated with black race was 0.4; 95% confidence intervals 0.2-0.7. The putative combined low risk phenotype (slow CYP1A2/rapid NAT2) was more common in blacks than in whites (25% vs. 15%, Pwhites.

  3. The Influence of Daily Periods on the Drinking Behavior in Romanian Black and White Primiparous Cows

    Directory of Open Access Journals (Sweden)

    Silvia Erina

    2011-10-01

    Full Text Available The study was carried out on 9 Romanian Black and White cows in their first one hundred days of lactation. The aim of this study was to determine some aspect of drinking behavior of the cows in 24 hours that were divided into 3 day periods (intervals: 07:00-14:00 (I1, 14:00-21:00 (I2, 21:00-07:00 (I3. During the experiments, the following drinking behavior aspects were determined: the number of drinkings and the length of drinking periods per 24 hours, in the fibrous-succulents administration order of forages (O1 and succulents-fibrous order (O2. Data was computed by ANOVA/MANOVA. Results showed that the daily periods had an influence on the number of drinkings and drinking length, the lowest number of drinkings occurred during the night interval I3 (4.20 and the highest number together with the longest drinking period occurred in the second interval I2 (12.47 and 1062.50 seconds. In both administration order of forages ( O1 and O2 there were a very significant differences (p<0.001 between I1 and I2 in favour of I2, between I1 and I3 in favour of I1 and between I2 and I3 in favour of I2, for number of drinkings periods and for length of drinking periods.

  4. Anatomical differences in the psoas muscles in young black and white men.

    Science.gov (United States)

    Hanson, P; Magnusson, S P; Sorensen, H; Simonsen, E B

    1999-02-01

    The anatomy of the psoas major muscle (PMA) in young black and white men was studied during routine autopsies. The forensic autopsies included 44 fresh male cadavers (21 black, 23 white) with an age span of 14 to 25 y. The range for weight was 66-76 kg and for height 169-182 cm. The PMA was initially measured in its entire length before measuring the diameter and circumference at each segmental level (L1-S1). At each segmental level, the calculated anatomical cross-sectional area (ACSA) was more than 3 times greater in the black group compared with the white (P psoas minor muscle (PMI) was absent in 91% of the black subjects, but only in 13% of the white subjects. These data show that the PMA is markedly larger in black than white subjects. The marked race specific difference in the size of the PMA may have implications for hip flexor strength, spine function and race specific incidence in low back pathology, and warrants further investigation.

  5. Analysis of structural changes in bleached keratin fibers (black and white human hair) using Raman spectroscopy.

    Science.gov (United States)

    Kuzuhara, Akio

    2006-04-15

    To investigate the influence of bleaching treatments on keratin fibers, the structure of cross-sections at various depths of bleached human hair (black and white human hair) was directly analyzed without isolating the cuticle and cortex, using Raman spectroscopy. The S-S band intensity existing from the cuticle region to the center of cortex region of virgin white human hair decreased, while the S-O band intensity at 1040 cm(-1), assigned to cysteic acid, increased by performing the bleaching treatment. Especially, the S-O band intensity of the cuticle region increased remarkably compared with that of the cortex region. Also, the amide III (unordered) band intensity in the cortex region increased, indicating that some of the proteins existing throughout the cortex region changed to the random coil form. Moreover, it has been found that the S-S band intensity existing from the cuticle region to the center of the cortex region of the virgin black human hair decreased remarkably, while the S-O band intensity increased significantly compared with that of the virgin white human hair by performing the bleaching treatment. From these experiments, we concluded that the melanin granules including metal ions act as a decomposition accelerator for the oxidizing agent, thereby leading to a higher level of disulfide (-SS-) group cleavage in the black human hair compared with that of the white human hair. Copyright 2006 Wiley Periodicals, Inc.

  6. Aflatoxins and ochratoxin a reduction in black and white pepper by gamma radiation

    International Nuclear Information System (INIS)

    Jalili, M.; Jinap, S.; Noranizan, M.A.

    2012-01-01

    Irradiation is an important means of decontamination of food commodities, especially spices. The aim of the current study was to investigate the efficacy of gamma radiation ( 60 Co) for decontaminating ochratoxin A (OTA) and aflatoxins B 1 (AFB 1 ), B 2 (AFB 2 ), G 1 (AFG 1 ) and G 2 (AFG 2 ) residues in artificially contaminated black and white pepper samples. The moisture content of the pepper samples was set at 12% or 18%, and the applied gamma dose ranged from 5 to 30 kGy. Mycotoxin levels were determined by high-performance liquid chromatography (HPLC) after immunoaffinity column (IAC) chromatography. Both the gamma irradiation dose and moisture content showed significant effects (P<0.05) on mycotoxin reduction. The maximum toxin reductions, found at 18% moisture content and 30 kGy, were 55.2%, 50.6%, 39.2%, 47.7% and 42.9% for OTA, AFB1, AFB2, AFG1 and AFG2, respectively. - Highlights: ► The effect of gamma ray on the reduction of AFs and OTA in pepper was investigated. ► The gamma dose and moisture showed significant effects on mycotoxin reduction. ► The maximum reduction was found at 18% moisture content and 30 kGy gamma ray. ► The method, even at 30 kGy and 18% moisture, failed to destroy total of mycotoxins.

  7. Validity of self-reported fitness across black and white race, gender, and health literacy subgroups.

    Science.gov (United States)

    Keith, NiCole R; Clark, Daniel O; Stump, Timothy E; Callahan, Christopher M

    2015-01-01

    To compare concurrent criterion validity of the Self-Reported Fitness (SRFit) Survey, a new fitness measure, between black and white race, gender, and health literacy groups. Cross-sectional. Midwest urban primary care center and commercial fitness center. One hundred one black, white, male, and female primary care patients aged ≥40 years. Measures included demographics, the Rapid Estimate of Adult Literacy in Medicine, the SRFit Survey, and the Rikli and Jones Senior Fitness Test battery of physical tests. The BodPod determined percentage of body fat. Body mass index was calculated. Concurrent validity was assessed using Pearson and Spearman rank order correlations between corresponding physical tests and SRFit survey items. Correlations between physical tests and SRFit items ranged from r = .52 to .76 (ρ = .41-.85) in males, r = .40 to .79 (ρ = .33-.80) in females, r = .45 to .79 (ρ = .53-.82) in blacks, and r = .49 to .77 (ρ = .33-.82) in whites. Correlations were r = .58 (ρ = .58) to r = .77 (ρ = .79) in persons with low health literacy and r = .50 to .79 (ρ = .39-.85) among persons with moderate to high health literacy. SRFit shows similar concurrent validity across race, gender, and health literacy subgroups.

  8. Study on the Excretion Behaviour in Romanian Black and White Primiparous Cows. Number of Defecations

    Directory of Open Access Journals (Sweden)

    Silvia Erina

    2012-10-01

    Full Text Available The study was carried out on 9 Romanian Black and White cows in their first hundred days of lactation. The aim ofthis study was to measure the main aspects that characterized the excretion behaviour (defecation of the cows in 24hours that were divided into 3 day periods: 07:00-14:00 (I1, 14:00-2:001 (I2, 21:00-07:00 (I3. During theexperiments, the following defecation behaviour aspects were determined: total number of defecations, number ofdefecations in the three intervals, number of defecations according to administration order of forages (fibroussucculentsand succulents-fibrous. Data was computed by ANOVA/MANOVA. Results showed that the differencesbetween intervals I1-I2 and I1-I3 were statistically very significant (p< 0.01. In fibrous – succulent order thedefecation were 0.69 higher than in succulent- fibrous order (p< 0.01. Total number of defecation resulted bysumming the defecation from the three intervals, was 14.67 in the first administration order (fibrous-succulent and12.61 in the second administration order (succulent-fibrous.

  9. Nutrient composition of plants consumed by black and white ruffed lemurs, Varecia variegata, in the Betampona Natural Reserve, Madagascar.

    Science.gov (United States)

    Schmidt, Debra A; Iambana, R Bernard; Britt, Adam; Junge, Randall E; Welch, Charles R; Porton, Ingrid J; Kerley, Monty S

    2010-01-01

    The purpose of this study was to quantify the concentrations of crude protein, fat, ash, neutral detergent fiber, acid detergent fiber, lignin, nonstructural carbohydrates, and gross energy in plant foods consumed by wild black and white ruffed lemurs (Varecia variegata). Calcium, phosphorous, magnesium, potassium, sodium, iron, zinc, copper, manganese, molybdenum, and selenium concentrations were also determined. A total of 122 samples from 33 plant families and more than 60 species were collected and analyzed for their nutritional content. The specific nutrient needs of black and white ruffed lemurs are unknown, but quantifying the nutritional composition of the foods they consume in the wild will help nutritionists and veterinarians formulate more appropriate diets for captive ruffed lemurs. This information will also supply information on how man-induced habitat changes affect the nutritional composition of foods consumed by free-ranging lemurs. (c) 2009 Wiley-Liss, Inc.

  10. Confirmatory factor analysis and invariance testing between Blacks and Whites of the Multidimensional Health Locus of Control scale.

    Science.gov (United States)

    LaNoue, Marianna; Harvey, Abby; Mautner, Dawn; Ku, Bon; Scott, Kevin

    2015-07-01

    The factor structure of the Multidimensional Health Locus of Control scale remains in question. Additionally, research on health belief differences between Black and White respondents suggests that the Multidimensional Health Locus of Control scale may not be invariant. We reviewed the literature regarding the latent variable structure of the Multidimensional Health Locus of Control scale, used confirmatory factor analysis to confirm the three-factor structure of the Multidimensional Health Locus of Control, and analyzed between-group differences in the Multidimensional Health Locus of Control structure and means across Black and White respondents. Our results indicate differences in means and structure, indicating more research is needed to inform decisions regarding whether and how to deploy the Multidimensional Health Locus of Control appropriately.

  11. Chronic psychological stress and racial disparities in body mass index change between Black and White girls aged 10-19.

    Science.gov (United States)

    Tomiyama, A Janet; Puterman, Eli; Epel, Elissa S; Rehkopf, David H; Laraia, Barbara A

    2013-02-01

    One of the largest health disparities in the USA is in obesity rates between Black and White females. The objective of this study was to test the hypothesis that the stress-obesity link is stronger in Black females than in White females aged 10-19. Multilevel modeling captured the dynamic of acute (1 month) and chronic (10 years) stress and body mass index (BMI; weight in kilograms divided by height in meters squared) change in the National Heart, Lung, and Blood Institute Growth and Health Study, which consists of 2,379 Black and White girls across a span of socioeconomic status. The girls were assessed longitudinally from ages 10 to 19. Higher levels of stress during the 10 years predicted significantly greater increases in BMI over time compared to lower levels of stress. This relationship was significantly stronger for Black compared to White girls. Psychological stress is a modifiable risk factor that may moderate early racial disparities in BMI.

  12. Racism in soccer? Perception of challenges of black and white players by white referees, soccer players, and fans.

    Science.gov (United States)

    Wagner-Egger, Pascal; Gygax, Pascal; Ribordy, Farfalla

    2012-02-01

    This experiment investigated challenge evaluations in soccer and their relation to prejudice: more precisely, whether skin colour may influence judgments of soccer tackles. Three groups of participants (soccer players, referees,and soccer fans) were asked to evaluate challenges, featuring Black and White players as aggressors and victims in a mixed-design study. Results showed that participants made some differentiations between Black and White players in a challenge evaluation task. Participants were more likely to consider within-group challenges as fouls and were faster to consider challenges made by Black players as fouls. On the other hand, fouls made by White players were seen as more severe. There were no major differences between the participating groups, suggesting that the observed effects were independent of how good players were or whether the participants were referees or not.

  13. Comparing Black and White Drug Offenders: Implications for Racial Disparities in Criminal Justice and Reentry Policy and Programming.

    Science.gov (United States)

    Rosenberg, Alana; Groves, Allison K; Blankenship, Kim M

    2017-01-01

    Despite knowledge of racial bias for drug-related criminal justice involvement and its collateral consequences, we know less about differences between Black and White drug offenders. We compare 243 Blacks and White non-violent drug offenders in New Haven, CT for demographic characteristics, substance use, and re-entry services accessed. Blacks were significantly more likely to have sales and possession charges, significantly more likely to prefer marijuana, a less addictive drug, and significantly less likely to report having severe drug problems. For both races, drug treatment was the most common service accessed through supervision. These comparisons suggest different reasons for committing drug-related crimes and thus, different reentry programming needs. While drug treatment is critical for all who need it, for racial justice, we must also intervene to address other needs of offenders, such as poverty alleviation and employment opportunities.

  14. Morphometrics of wild black-and-white ruffed lemurs [Varecia variegata; Kerr, 1792].

    Science.gov (United States)

    Baden, Andrea L; Brenneman, Rick A; Louis, Edward E

    2008-10-01

    This study presents the first detailed morphometric measurements of wild caught black-and-white ruffed lemurs (Varecia variegata) from the eastern rainforests of Madagascar and aims to quantify the morphological variation present throughout their recognized range. One hundred and forty-four adult and juvenile individuals from 15 sites were sampled for 20 cranial, dental and postcranial morphometric and body mass measurements. Data were collected from an equal number of male and female individuals sampled across seasons over a 7-year period (1999-2002, 2004-2006). Results indicate that adult body mass and morphometric measurements varied between sexes across sites; however, the only significant intersexual difference found was that females possessed, on average, longer tails than males. Contrary to previous studies, significant seasonal variation could not be detected in either male or female body mass or testicular volume (i.e., breeding vs. nonbreeding, food-scarce vs. food-abundant seasons). Measurements did, however, vary significantly by site and subspecies, though clinal variation could not explain these differences. The introduced population from Nosy Mangabe exhibited significantly lower body mass and overall body length than all other populations; however, this distinction may not have been attributable to natural variation, and may have instead resulted from the ecologically restrictive habitat (e.g., unusually high lemur population densities, limited food resources, ecological isolation) of this introduced population. Finally, although fore-to-hindlimb, brachium-to-thigh and hindlimb indices were comparable to previous values, forelimb indices calculated here deviate significantly from previous reports, placing V. variegata within the upper range of lemurid taxa. It is currently unknown whether this is an artifact of sampling methods (i.e., live vs. skeletal specimens) or whether this is an avenue that warrants further investigation.

  15. Personality and well-being in Black and White South African emerging adults

    Directory of Open Access Journals (Sweden)

    Jan Alewyn Nel

    2016-12-01

    Full Text Available Background In the last ten years, the South African Personality Inventory (SAPI has been developed as an indigenous measurement of personality for the multi-cultural environment of South Africa. The aim of the SAPI is to assess personality in an unbiased and equivalent way. For the purpose of this study, we used an 82-item version of the SAPI which measures nine factors (Conscientiousness, Emotional Stability, Extraversion, Facilitating, Integrity, Intellect, Openness, Relationship Harmony and Soft-heartedness. Participants and procedure A cross-sectional survey was conducted using the SAPI, the General Health Questionnaire and the Brief Multidimensional Student Life Satisfaction Scale. A purposive sample was drawn from Black and White emerging adults (N = 990. We assessed the relationship between personality aspects and well-being across groups in a multiple group structural equation model (SEM using the SPSS and AMOS programs. Results Black emerging adults showed evidence of more individualistic-inclined personality features, while the White emerging adults seem to demonstrate more collectivistic features. In terms of health, the White emerging adults experience more life satisfaction than their Black counterparts. Conscientiousness, emotional stability, extraversion, facilitating and openness predict well-being among emerging adults. Conclusions This study contributes to expanding the nomological network of the SAPI, and it enhances knowledge pertaining to the link between personality and well-being of emerging adults in South Africa. Understanding which factors contribute to poor mental health and lack of life satisfaction may lead to innovation programmes for emerging adults to assist them in dealing with negative health outcomes possibly associated with living in multicultural contexts.

  16. Association of multiple chronic conditions and pain among older black and white adults with diabetes mellitus

    Directory of Open Access Journals (Sweden)

    Tamara A. Baker

    2017-10-01

    Full Text Available Abstract Background Aging is often associated with the challenge of navigating daily tasks with a painful chronic medical illness. Yet, there is concern of the number of older adults impacted with more than one chronic condition. Despite the increasing number of adults diagnosed with diabetes and comorbid chronic illnesses, there remains a lack of understanding in how multiple illnesses relate to experiences of pain. To assess the association between multiple chronic conditions and pain, this study aimed to identify clusters of chronic medical conditions and their association with pain among a sample of older Black and White adults diagnosed with diabetes. Methods Two hundred and thirty-six participants responded to a series of questions assessing pain frequency and severity, as well as health and social characteristics. A factor analysis was used to categorize clusters of medical conditions, and multiple regression models were used to examine predictors of pain. Results Seven of the assessed chronic medical conditions loaded on three factors, and accounted for 57.2% of the total variance, with heart disease (factor 1 accounting for 21.9%, musculoskeletal conditions (factor 2 for another 18.4%, and factor 3 (microvascular diseases accounting for a final 16.9% of the variability among the chronic medical conditions. Covariate-adjusted models showed that fewer years of education and higher scores on the microvascular and musculoskeletal conditions factors were associated with higher pain frequency, with the musculoskeletal conditions factor being the strongest predictor. Conclusions Findings from this study compliment existent literature underscoring the prevalence and importance of comorbid diagnoses in relation to pain. Examining health-related factors beyond a single disease diagnosis also provides an opportunity to explore underlying disease co-occurrences that may persist beyond organ system classifications.

  17. Associations between Race and Eating Disorder Symptom Trajectories in Black and White Girls.

    Science.gov (United States)

    Bodell, Lindsay P; Wildes, Jennifer E; Cheng, Yu; Goldschmidt, Andrea B; Keenan, Kate; Hipwell, Alison E; Stepp, Stephanie D

    2018-04-01

    Epidemiological research suggests racial differences in the presentation of eating disorder symptoms. However, no studies have examined associations between race and eating disorder symptom trajectories across youth and adolescence, which is necessary to inform culturally sensitive prevention programs. The purpose of the current study was to examine the trajectories of eating disorder symptoms from childhood to young adulthood and to examine whether race was associated with trajectory group membership. Data were drawn from 2,305 Black and White girls who participated in a community-based longitudinal cohort study (Pittsburgh Girls Study) examining the development of psychopathology. The child and adult versions of the Eating Attitudes Test assessed self-reported eating disorder symptoms at six time points between ages 9 and 21 years. Growth mixture modeling was used to examine developmental trajectories of dieting, bulimia/food preoccupation, and total eating disorder symptom scores. Given potential confounds with race and disordered eating, financial strain (i.e., receiving public assistance) and weight were included as covariates. Four to six distinct developmental patterns were found across eating disorder symptoms, including none, increasing, decreasing, or increasing-decreasing trajectories. Black girls had a greater likelihood of being in the decreasing trajectories for dieting, bulimia/food preoccupation, and total eating disorder symptom scores. White girls were more likely to follow increasing trajectories of dieting and total eating disorder symptom scores compared to Black girls. These results highlight the importance of examining the influence of racial background on eating disorder symptoms and the potential need for differences in the timing and focus of prevention interventions in these groups.

  18. Relations of diet and physical activity to bone mass and height in black and white adolescents

    Directory of Open Access Journals (Sweden)

    Yanbin Dong

    2011-06-01

    Full Text Available Because the development of healthy bodies during the years of growth has life-long health consequences, it is important to understand the early influences of diet and physical activity (PA. One way to generate hypotheses concerning such influences is to conduct cross-sectional studies of how diet and PA are related to different components of body composition. The subjects were 660 black and white adolescents. Total body bone mineral content (BMC was measured with dual-energy X-ray absorptiometry; free-living diet and PA were assessed with 4-7 separate 24-h recalls. The main dietary variables investigated were: total energy intake, macronutrient distribution (%, dairy servings, vitamin D, and calcium. The main PA variables were hours of moderate PA (3-6 METs and vigorous PA (>6 METs. BMC was higher in blacks than in whites (P<0.01 and it increased more in boys than in girls (age by sex interaction as age increased (P<0.01. After adjustment for age, race and sex, higher levels of BMC were associated with higher levels of energy intake, dairy servings, calcium, vitamin D, and vigorous PA (all P 's<0.05. In the multivariable model, significant and independent proportions of the variance in BMC were explained by race, the age by sex interaction, calcium, and vigorous PA (all P 's<0.01. When height was used as the outcome variable, similar diet results were obtained; however, there was a sex by vigorous PA interaction, such that vigorous PA was associated with height only in the girls. These data are consistent with the hypothesis that the bone mass and height of growing youths are positively influenced by higher dietary intake of energy and dairy foods, along with sufficient amounts of vigorous PA. This hypothesis needs to be tested in randomized controlled trials.

  19. Predictors of repeated PSA testing among black and white men from the Maryland Cancer Survey, 2006.

    Science.gov (United States)

    Zhu, Yue; Sorkin, John D; Dwyer, Diane; Groves, Carmela; Steinberger, Eileen K

    2011-09-01

    Blacks have the highest incidence of and death from prostate cancer in the United States. Screening with prostate-specific antigen (PSA) may decrease mortality. Repeated testing allows for the calculation of PSA velocity (change of PSA over time), which may be a more clinically useful test for prostate cancer than a single PSA measurement. The objective of this study was to examine whether blacks were as likely as whites to report having had repeated PSA testing. The Maryland Cancer Survey 2006 was a population-based, random-digit-dialed statewide survey on cancer screening and risk behaviors of adults aged 40 years or older. We analyzed self-reported information on repeated PSA testing (2 PSA tests in the preceding 3 years) for 1,721 black and white men. We used logistic regression to estimate the effect of race and age on repeated PSA testing, adjusting for other covariates. Sixty-five percent of men reported ever having had a PSA test; 41% had repeated PSA testing in the past 3 years. Blacks aged 40 to 49 were more likely to report having repeated PSA testing than whites in this age group (adjusted odds ratio [AOR], 3.3; 95% confidence interval [CI], 1.6-6.5). Blacks aged 60 to 69 were less likely to report repeated PSA testing than whites (AOR, 0.4, 95% CI, 0.2-0.8). No difference was seen by race among men aged 50 to 59 and men aged 70 or older. Repeated PSA testing was associated with living in an urban area and with having higher education, health insurance, a family history of prostate cancer, and having discussed cancer screening with a doctor. Self-reported repeated PSA testing differed by age and race, being higher among blacks aged 40 to 49 and lower among blacks aged 60 to 69, compared with whites in their respective age groups.

  20. Three Novel Haplotypes of Theileria bicornis in Black and White Rhinoceros in Kenya.

    Science.gov (United States)

    Otiende, M Y; Kivata, M W; Jowers, M J; Makumi, J N; Runo, S; Obanda, V; Gakuya, F; Mutinda, M; Kariuki, L; Alasaad, S

    2016-02-01

    Piroplasms, especially those in the genera Babesia and Theileria, have been found to naturally infect rhinoceros. Due to natural or human-induced stress factors such as capture and translocations, animals often develop fatal clinical piroplasmosis, which causes death if not treated. This study examines the genetic diversity and occurrence of novel Theileria species infecting both black and white rhinoceros in Kenya. Samples collected opportunistically during routine translocations and clinical interventions from 15 rhinoceros were analysed by polymerase chain reaction (PCR) using a nested amplification of the small subunit ribosomal RNA (18S rRNA) gene fragments of Babesia and Theileria. Our study revealed for the first time in Kenya the presence of Theileria bicornis in white (Ceratotherium simum simum) and black (Diceros bicornis michaeli) rhinoceros and the existence of three new haplotypes: haplotypes H1 and H3 were present in white rhinoceros, while H2 was present in black rhinoceros. No specific haplotype was correlated to any specific geographical location. The Bayesian inference 50% consensus phylogram recovered the three haplotypes monophyleticly, and Theileria bicornis had very high support (BPP: 0.98). Furthermore, the genetic p-uncorrected distances and substitutions between T. bicornis and the three haplotypes were the same in all three haplotypes, indicating a very close genetic affinity. This is the first report of the occurrence of Theileria species in white and black rhinoceros from Kenya. The three new haplotypes reported here for the first time have important ecological and conservational implications, especially for population management and translocation programs and as a means of avoiding the transport of infected animals into non-affected areas. © 2014 Blackwell Verlag GmbH.

  1. COLORS FERTILE T. UYAR WAYS OF READING IN THE DILEMMA / FIRST CHOICE: BLACK AND WHITE

    Directory of Open Access Journals (Sweden)

    Fatih Arslan

    2016-09-01

    Full Text Available Since all light from the sun, which is still dominated by the first light of the sky or the sun. World time gave even at their disposal. They do people, he must realize that, albeit in different forms in the light. the main source of artificial light until it has never been changed. Poetry actually crushed under the light, will be written. He said the poet who want to reach an unknown time, the intention is to go on the road as close to divine theology. Take under the influence of the environment as a soul the dust of the poem depends to spread the spirit of all known. That's why we look at our poets, they move beyond what we see at a glance. The sense of light known by everyone. Special meaning is a reflection of the property. İknci Yeni, has witnessed a time of poetic intensity in the Turkish poetry tradition. Different trends in the world, has seen a time when the break occurred. All transitions have very different reactions in the human world of poets exception. Turgut Uyar, then all the values of the semi-urban stuck together as a personality we can say that to their climate. Light is a double value illuminating or decision they want to see him. Besides the special general sense, it also carries a qualified sense. Particularly striking is filled with black and white images load. White is interesting to carry the same attributes in the black space of the tragic point. This Turgut Uyar, adds a different dimension to the meaning of the poem.

  2. Exercise Training in "at Risk" Black and White Women: A Comparative Cohort Analyses.

    Science.gov (United States)

    Bowdon, Megan; Marcovitz, Pamela; Jain, Susanna K; Boura, Judith; Liroff, Kaitlin G; Franklin, Barry A

    2018-02-16

    Few data are available regarding the impact of exercise interventions in black women at risk for cardiovascular disease (CVD). Women ≥18 years without known CVD with ≥1 coronary risk factor were enrolled in a community-based exercise program ≥3 days per/week for ≥30 min/session for 6 months. Exercise training intensity ~50[FIGURE DASH]80% of functional capacity, using heart rate (HR) and/or rating of perceived exertion (RPE) as the primary intensity modulators. Pre-versus post conditioning quality of life (QOL) assessments (depression and level of daytime sleepiness), dietary fat intake, Duke Activity Status Index (DASI score), changes in cardiovascular efficiency (systolic/diastolic blood pressure [SBP/DBP], HR, RPE during a standardized submaximal workload), and anthropometric measures, including body weight, body mass index (BMI), and waist circumference, were evaluated. Of 556 volunteers, 143 were excluded, leaving 413 women (222 white, 191 black; mean ± SD age = 61 ± 9) who met compliance criteria. Both groups demonstrated significant (P <0.05) post-conditioning decreases in BMI, waist circumference, resting SBP/DBP, total and low density lipoprotein cholesterol, reductions in HR, SBP/DBP, and RPE at a fixed submaximal workload, and in fat screener, depression, and sleep scores. DASI scores increased significantly (P <0.0001) for both groups, signifying increases in self-reported functional capacity. Although 87 women (21%) experienced a musculoskeletal injury/discomfort during the program, there were no exercise-related cardiovascular events. A progressive moderate-to-vigorous exercise intervention without preliminary exercise testing elicited comparable improvements in coronary risk factors, anthropometric and QOL measures, and cardiovascular efficiency in 'at risk' black and white women. These adaptations were achieved at exercise levels below those recommended in contemporary physical activity guidelines.

  3. Breast cancer statistics, 2015: Convergence of incidence rates between black and white women.

    Science.gov (United States)

    DeSantis, Carol E; Fedewa, Stacey A; Goding Sauer, Ann; Kramer, Joan L; Smith, Robert A; Jemal, Ahmedin

    2016-01-01

    In this article, the American Cancer Society provides an overview of female breast cancer statistics in the United States, including data on incidence, mortality, survival, and screening. Approximately 231,840 new cases of invasive breast cancer and 40,290 breast cancer deaths are expected to occur among US women in 2015. Breast cancer incidence rates increased among non-Hispanic black (black) and Asian/Pacific Islander women and were stable among non-Hispanic white (white), Hispanic, and American Indian/Alaska Native women from 2008 to 2012. Although white women have historically had higher incidence rates than black women, in 2012, the rates converged. Notably, during 2008 through 2012, incidence rates were significantly higher in black women compared with white women in 7 states, primarily located in the South. From 1989 to 2012, breast cancer death rates decreased by 36%, which translates to 249,000 breast cancer deaths averted in the United States over this period. This decrease in death rates was evident in all racial/ethnic groups except American Indians/Alaska Natives. However, the mortality disparity between black and white women nationwide has continued to widen; and, by 2012, death rates were 42% higher in black women than in white women. During 2003 through 2012, breast cancer death rates declined for white women in all 50 states; but, for black women, declines occurred in 27 of 30 states that had sufficient data to analyze trends. In 3 states (Mississippi, Oklahoma, and Wisconsin), breast cancer death rates in black women were stable during 2003 through 2012. Widening racial disparities in breast cancer mortality are likely to continue, at least in the short term, in view of the increasing trends in breast cancer incidence rates in black women. © 2015 American Cancer Society.

  4. Vitamin D Supplementation Does Not Impact Insulin Resistance in Black and White Children.

    Science.gov (United States)

    Ferira, Ashley J; Laing, Emma M; Hausman, Dorothy B; Hall, Daniel B; McCabe, George P; Martin, Berdine R; Hill Gallant, Kathleen M; Warden, Stuart J; Weaver, Connie M; Peacock, Munro; Lewis, Richard D

    2016-04-01

    Vitamin D supplementation trials with diabetes-related outcomes have been conducted almost exclusively in adults and provide equivocal findings. The objective of this study was to determine the dose-response of vitamin D supplementation on fasting glucose, insulin, and a surrogate measure of insulin resistance in white and black children aged 9–13 years, who participated in the Georgia, Purdue, and Indiana University (or GAPI) trial: a 12-week multisite, randomized, triple-masked, dose-response, placebo-controlled vitamin D trial. Black and white children in the early stages of puberty (N = 323, 50% male, 51% black) were equally randomized to receive vitamin D3 (0, 400, 1000, 2000, or 4000 IU/day) for 12 weeks. Fasting serum 25-hydroxyvitamin D (25(OH)D), glucose and insulin were assessed at baseline and weeks 6 and 12. Homeostasis model assessment of insulin resistance was used as a surrogate measure of insulin resistance. Statistical analyses were conducted as intent-to-treat using a mixed effects model. Baseline serum 25(OH)D was inversely associated with insulin (r = −0.140, P = 0.017) and homeostasis model assessment of insulin resistance (r = −0.146, P = 0.012) after adjusting for race, sex, age, pubertal maturation, fat mass, and body mass index. Glucose, insulin, and insulin resistance increased (F > 5.79, P insulin resistance, vitamin D supplementation had no impact on fasting glucose, insulin, or a surrogate measure of insulin resistance over 12 weeks in apparently healthy children.

  5. Racial Differences in Symptoms, Comorbidity, and Treatment for Major Depressive Disorder Among Black and White Adults

    Science.gov (United States)

    Hankerson, Sidney H.; Fenton, Miriam C.; Geier, Timothy J.; Keyes, Katherine M.; Weissman, Myrna M.; Hasin, Deborah S.

    2013-01-01

    Objective Racial differences in the clinical nature of major depressive disorder (MDD) could contribute to treatment disparities, but national data with large samples are limited. Our objective was to examine black-white differences in clinical characteristics and treatment for MDD from one of the largest, national community samples of US adults. Methods Non-Hispanic black and white adults (n = 32 752) from the 2001–2002 National Epidemiologic Survey on Alcohol and Related Conditions produced data on 1866 respondents who met criteria for MDD based on the Diagnostic and Statistical Manual of Mental Disorders (Fourth Edition) in the preceding 12 months. Outcome measures were depressive symptoms, comorbid psychiatric and medical disorders, disability, and treatment. Results Blacks with MDD had significantly higher odds of initial insomnia, early-morning awakening, and restlessness than whites. Odds of hypertension (odds ratio [OR], 2.16; 95% confidence interval [CI], 1.48–3.14), obesity (OR, 1.98; 95% CI, 1.45–2.69), and liver disease (OR, 3.68; 95% CI, 1.20–11.30) were higher among blacks than whites. In unadjusted models, blacks had greater impairment than whites in social and physical functioning. However, adjusting for sociodemographic characteristics eliminated these differences. Blacks were less likely than whites to receive outpatient services (OR, 0.51; 95% CI, 0.36–0.72) and be prescribed medications for MDD, but were more likely to receive emergency room and inpatient treatment. Conclusions We found few racial differences in depressive symptoms, psychiatric comorbidity, and disability after adjusting for sociodemographic factors. Blacks’ lower utilization of ambulatory treatment for MDD and greater medical comorbidity, emergency department use, and hospitalization suggests that management of MDD among blacks should be emphasized in primary care or other settings where treatment is more accessible. PMID:21999032

  6. Comparative Outcomes After Percutaneous Coronary Intervention Among Black and White Patients Treated at US Veterans Affairs Hospitals.

    Science.gov (United States)

    Kobayashi, Taisei; Glorioso, Thomas J; Armstrong, Ehrin J; Maddox, Thomas M; Plomondon, Mary E; Grunwald, Gary K; Bradley, Steven M; Tsai, Thomas T; Waldo, Stephen W; Rao, Sunil V; Banerjee, Subhash; Nallamothu, Brahmajee K; Bhatt, Deepak L; Rene, A Garvey; Wilensky, Robert L; Groeneveld, Peter W; Giri, Jay

    2017-09-01

    Current comparative outcomes among black and white patients treated with percutaneous coronary intervention (PCI) in the Veterans Affairs (VA) health system are not known. To compare outcomes between black and white patients undergoing PCI in the VA health system. This study compared black and white patients who underwent PCI between October 1, 2007, and September 30, 2013, at 63 VA hospitals using data recorded in the VA Clinical Assessment, Reporting, and Tracking System for Cardiac Catheterization Laboratories (CART-CL) program. A generalized linear mixed model with a random intercept for site assessed the relative difference in odds of outcomes between black and white patients. The setting was integrated institutionalized hospital care. Excluded were all patients of other races or those with multiple listed races and those with missing data regarding race or the diagnostic cardiac catheterization. The dates of analysis were January 7, 2016, to April 17, 2017. Percutaneous coronary intervention at a VA hospital. The primary outcome was 1-year mortality. Secondary outcomes were 30-day all-cause readmission rates, 30-day acute kidney injury, 30-day blood transfusion, and 1-year readmission rates for myocardial infarction. In addition, variations in procedural and postprocedural care were examined, including the use of intravascular ultrasound, optical coherence tomography, fractional flow reserve measurements, bare-metal stents, postprocedural medications, and radial access. A total of 42 391 patients (13.3% black and 98.4% male; mean [SD] age, 65.2 [9.1] years) satisfied the inclusion and exclusion criteria. In unadjusted analyses, black patients had higher rates of 1-year mortality (7.1% vs 5.9%, P < .001) as well as secondary outcomes of 30-day acute kidney injury (20.8% vs 13.8%, P < .001), 30-day blood transfusion (3.4% vs 2.7%, P < .01), and 1-year readmission rates for myocardial infarction (3.3% vs 2.7%, P = .01) compared with white

  7. Associations of 25-hydroxyvitamin D with markers of inflammation, insulin resistance and obesity in black and white community-dwelling adults

    Directory of Open Access Journals (Sweden)

    Jennifer L. Jackson

    2016-09-01

    Conclusions: Lower 25(OHD concentrations are associated with disturbances in metabolic health in both blacks and whites. Whether correcting vitamin D deficiency could offer a beneficial therapy for disease prevention requires further study.

  8. A Study of Cross-Cultural Communication between Blacks and Whites in the U.S. Army. CAL Research Report: 2

    Science.gov (United States)

    Taylor, Orlando; Ferguson, Dianna

    1975-01-01

    This investigation concerned specific verbal and nonverbal sources of communication problems between blacks and whites in the U.S. Army. Special reference was made to the problems which lead to misinterpretations and social offensiveness. (SW)

  9. Early Elective Delivery Disparities between Non-Hispanic Black and White Women after Statewide Policy Implementation.

    Science.gov (United States)

    Kozhimannil, Katy B; Muoto, Ifeoma; Darney, Blair G; Caughey, Aaron B; Snowden, Jonathan M

    2017-12-19

    In 2011, Oregon implemented a policy that reduced the state's rate of early (before 39 weeks' gestation) elective (without medical need) births. This analysis measured differential policy effects by race, examining whether Oregon's policy was associated with changes in non-Hispanic Black-White disparities in early elective cesarean and labor induction. We used Oregon birth certificate data, defining prepolicy (2008-2010) and postpolicy (2012-2014) periods, including non-Hispanic Black and White women who gave birth during these periods (n = 121,272). We used longitudinal spline models to assess policy impacts by race and probability models to measure policy-associated changes in Black-White disparities. We found that the prepolicy Black-White differences in early elective cesarean (6.1% vs. 4.3%) were eliminated after policy implementation (2.8% vs. 2.5%); adjusted models show decreases in the odds of elective early cesarean among Black women after the policy change (adjusted odds ratio, 0.47; 95% confidence interval, 0.22-1.00; p = .050) and among White women (adjusted odds ratio, 0.79; 95% confidence interval, 0.67-0.93; p = .006). Adjusted probability models indicated that policy implementation resulted in a 1.75-percentage point narrowing (p = .011) in the Black-White disparity in early elective cesarean. Early elective induction also decreased, from 4.9% and 4.7% for non-Hispanic Black and non-Hispanic White women to 3.8% and 2.5%, respectively; the policy was not associated with a statistically significant change in disparities. A statewide policy reduced racial disparities in early elective cesarean, but not early elective induction. Attention to differential policy effects by race may reveal changes in disparities, even when that is not the intended focus of the policy. Copyright © 2017 Jacobs Institute of Women's Health. Published by Elsevier Inc. All rights reserved.

  10. Chronic psychological stress and racial disparities in body mass index change between Black and White girls aged 10-19

    OpenAIRE

    Tomiyama, AJ; Puterman, E; Epel, ES; Rehkopf, DH; Laraia, BA

    2013-01-01

    Background: One of the largest health disparities in the USA is in obesity rates between Black and White females. Purpose: The objective of this study was to test the hypothesis that the stress-obesity link is stronger in Black females than in White females aged 10-19. Methods: Multilevel modeling captured the dynamic of acute (1 month) and chronic (10 years) stress and body mass index (BMI; weight in kilograms divided by height in meters squared) change in the National Heart, Lung, and Blood...

  11. Population-level correlates of preterm delivery among black and white women in the U.S.

    Directory of Open Access Journals (Sweden)

    Suzan L Carmichael

    Full Text Available OBJECTIVE: This study examined the ability of social, demographic, environmental and health-related factors to explain geographic variability in preterm delivery among black and white women in the US and whether these factors explain black-white disparities in preterm delivery. METHODS: We examined county-level prevalence of preterm delivery (20-31 or 32-36 weeks gestation among singletons born 1998-2002. We conducted multivariable linear regression analysis to estimate the association of selected variables with preterm delivery separately for each preterm/race-ethnicity group. RESULTS: The prevalence of preterm delivery varied two- to three-fold across U.S. counties, and the distributions were strikingly distinct for blacks and whites. Among births to blacks, regression models explained 46% of the variability in county-level risk of delivery at 20-31 weeks and 55% for delivery at 32-36 weeks (based on R-squared values. Respective percentages for whites were 67% and 71%. Models included socio-environmental/demographic and health-related variables and explained similar amounts of variability overall. CONCLUSIONS: Much of the geographic variability in preterm delivery in the US can be explained by socioeconomic, demographic and health-related characteristics of the population, but less so for blacks than whites.

  12. Colours in black and white: the depiction of lightness and brightness in achromatic engravings before the invention of photography.

    Science.gov (United States)

    Zavagno, Daniele; Massironi, Manfredo

    2006-01-01

    What is it like to see the world in black and white? In the pioneer days of cinema, when movies displayed grey worlds, was it true that no 'colours' were actually seen? Did every object seen in those projections appear grey in the same way? The answer is obviously no--people in those glorious days were seeing a world full of light, shadows, and objects in which colours were expressed in terms of lightness. But the marvels of grey worlds have not always been so richly displayed. Before the invention of photography, the depiction of scenes in black-and-white had to face some technical and perceptual challenges. We have studied the technical and perceptual constraints that XV-XVIII century engravers had to face in order to translate actual colours into shades of grey. An indeterminacy principle is considered, according to which artists had to prefer the representation of some object or scene features over others (for example brightness over lightness). The reasons for this lay between the kind of grey scale technically available and the kind of information used in the construction of 3-D scenes. With the invention of photography, photomechanical reproductions, and new printing solutions, artists had at their disposal a continuous grey scale that greatly reduces the constraints of the indeterminacy principle.

  13. Inequality in Black and White High School Students' Perceptions of School Support: An Examination of Race in Context.

    Science.gov (United States)

    Bottiani, Jessika H; Bradshaw, Catherine P; Mendelson, Tamar

    2016-06-01

    Supportive relationships with adults at school are critical to student engagement in adolescence. Additional research is needed to understand how students' racial backgrounds interact with the school context to shape their perceptions of school support. This study employed multilevel, latent variable methods with a sample of Black and White students (N = 19,726, 35.8 % Black, 49.9 % male, mean age = 15.9) in 58 high schools to explore variation in perceived caring, equity, and high expectations by student race, school diversity, and socioeconomic context. The results indicated that Black students perceived less caring and equity relative to White students overall, and that equity and high expectations were lower in diverse schools for both Black and White students. Nonetheless, racial disparities were attenuated in more diverse schools. The findings point to the need for intervention to improve perceptions of school support for Black youth and for all students in lower income and more diverse schools.

  14. Social Risk Factors of Black and White Adolescents' Substance Use: The Differential Role of Siblings and Best Friends.

    Science.gov (United States)

    Rowan, Zachary R

    2016-07-01

    Efforts to understand peer influence among adolescents have established the robust relationship between having substance using peers and future substance use. Still, research suggests that peer influence affects different types of adolescents in different ways. Black adolescents may be less susceptible to friends compared to white adolescents and possess stronger family-orientation, suggesting that siblings may affect deviance of Black adolescents whereas friends will have a minimal impact. This study used data from the first two waves of the National Longitudinal Study of Adolescent to Adult Health to evaluate the relative strength of best friend and siblings' influence as risk factors for Black and White adolescents' alcohol and cigarette use. Approximately 182 Black sibling pairs (37 % male) and 657 white sibling pairs (46 % male) that ranged in ages from 11 to 19 were in the longitudinal analyses for the current study. The findings demonstrated that sibling and best friends' substance use explained white adolescents' cigarette and alcohol use, whereas Black adolescents' cigarette and alcohol use was predominantly explained by siblings' substance use. Ultimately, the results indicated the nuanced role that two types of peers have in explaining variation in substance use across Black and White adolescents.

  15. Disparities in Cardiovascular Disease and Type 2 Diabetes Risk Factors in Blacks and Whites: Dissecting Racial Paradox of Metabolic Syndrome

    Directory of Open Access Journals (Sweden)

    Kwame Osei

    2017-08-01

    Full Text Available Cardiovascular diseases (CVD remain as the leading cause of mortality in the western world and have become a major health threat for developing countries. There are several risk factors that account for the CVD and the associated mortality. These include genetics, type 2 diabetes (T2DM, obesity, physical inactivity, hypertension, and abnormal lipids and lipoproteins. The constellation of these risk factors has been termed metabolic syndrome (MetS. MetS varies among racial and ethnic populations. Thus, race and ethnicity account for some of the differences in the MetS and the associated CVD and T2DM. Furthermore, the relationships among traditional metabolic parameters and CVD differ, especially when comparing Black and White populations. In this regard, the greater CVD in Blacks than Whites have been partly attributed to other non-traditional CVD risk factors, such as subclinical inflammation (C-reactive protein, homocysteine, increased low-density lipoprotein oxidation, lipoprotein a, adiponectin, and plasminogen activator inhibitor-1, etc. Thus, to understand CVD and T2DM differences in Blacks and Whites with MetS, it is essential to explore the contributions of both traditional and non-traditional CVD and T2DM risk factors in Blacks of African ancestry and Whites of Europoid ancestry. Therefore, in this mini review, we propose that non-traditional risk factors should be integrated in defining MetS as a predictor of CVD and T2DM in Blacks in the African diaspora in future studies.

  16. Disease Prevalence and Use of Health Care among a National Sample of Black and White Male State Prisoners

    Science.gov (United States)

    Rosen, David L.; Hammond, Wizdom P.; Wohl, David A.; Golin, Carol E.

    2014-01-01

    U.S. prisons have a court-affirmed mandate to provide health care to prisoners. Given this mandate, we sought to determine whether use of prison health care was equitable across race using a nationally-representative sample of Black and White male state prisoners. We first examined the prevalence of health conditions by race. Then, across all health conditions and for each of 15 conditions, we compared the proportion of Black and White male prisoners with the condition who received health care. For most conditions including cancer, heart disease, and liver-related disorders, the age-adjusted prevalence of disease among Blacks was lower than among Whites (p<.05). Blacks were also modestly more likely than Whites to use health care for existing conditions (p<.05), particularly hypertension, cerebral vascular accident/brain injury, cirrhosis, flu-like illness, and injury. The observed racial disparities in health and health care use are different from those among non-incarcerated populations. PMID:22643475

  17. Zinc Supplementation Does Not Alter Indicators of Insulin Secretion and Sensitivity in Black and White Female Adolescents.

    Science.gov (United States)

    Lobene, Andrea J; Kindler, Joseph M; Jenkins, Nathan T; Pollock, Norman K; Laing, Emma M; Grider, Arthur; Lewis, Richard D

    2017-07-01

    Background: Zinc is a micronutrient involved in the production of, and peripheral sensitivity to, pancreatic β cell-derived insulin. To our knowledge, the effect of zinc supplementation on insulin outcomes, and potential risk of diabetes, in otherwise healthy children in the United States has not been investigated. Objective: The objective of this study was to determine the influence of zinc supplementation on insulin outcomes in black and white girls in the early stages of adolescence. A secondary objective was to determine relations between baseline zinc concentrations and insulin outcomes. Methods: Healthy black and white girls aged 9-11 y were randomly assigned to daily supplementation of zinc (9 mg elemental Zn/d; n = 75; blacks: n = 35) or placebo ( n = 72; blacks: n = 32) for 4 wk. Fasting serum insulin, glucose, and C-peptide were assessed at baseline and at 4 wk. C-peptide and glucose values were used to calculate the computer model-derived homeostatic model assessment of insulin resistance (HOMA2-IR). Changes in outcome measures were compared by using repeated-measures, mixed-model ANOVA. Results: Baseline plasma zinc was not correlated with C-peptide ( r = -0.07), insulin ( r = -0.06), or HOMA2-IR ( r = -0.09) (all P > 0.05) after controlling for race and age. Treatment × time interactions for C-peptide and HOMA2-IR were not significant (both P > 0.05). Although the treatment × race × time interactions for C-peptide and HOMA2-IR were not significant (both P = 0.08), black girls who received the placebo experienced slight increases in C-peptide (15.7%) and HOMA2-IR (17.7%) ( P = 0.06). Conclusions: Four weeks of zinc supplementation had no effect on insulin outcomes in healthy black and white early-adolescent girls, although C-peptide and HOMA2-IR tended to increase in black girls who received placebo. Additional trials that are appropriately powered should further explore the effect of zinc on markers of diabetes risk, and whether race affects this

  18. Degree of facial and body terminal hair growth in unselected black and white women: toward a populational definition of hirsutism.

    Science.gov (United States)

    DeUgarte, Catherine Marin; Woods, K S; Bartolucci, Alfred A; Azziz, Ricardo

    2006-04-01

    Hirsutism (i.e. facial and body terminal hair growth in a male-like pattern in women) is the principal clinical sign of hyperandrogenism, although its definition remains unclear. The purposes of the present study were to define 1) the degree of facial and body terminal hair, as assessed by the modified Ferriman-Gallwey (mFG) score, in unselected women from the general population; 2) the effect of race (Black and White) on the same; and 3) the normative cutoff values. We conducted a prospective observational study at a tertiary academic medical center. Participants included 633 unselected White (n = 283) and Black (n = 350) women presenting for a preemployment physical exam. Interventions included history and physical examination. Terminal body hair growth was assessed using the mFG scoring system; nine body areas were scored from 0-4 for terminal hair growth distribution. The mFG scores were not normally distributed; although cluster analysis failed to identify a natural cutoff value or clustering of the population, principal component and univariate analyses denoted two nearly distinct clusters that occurred above and below an mFG value of 2, with the bulk of the scores below. Overall, an mFG score of at least 3 was observed in 22.1% of all subjects (i.e. the upper quartile); of these subjects, 69.3% complained of being hirsute, compared with 15.8% of women with an mFG score below this value, and similar to the proportion of women with an mFG score of at least 8 who considered themselves to be hirsute (70.0%). Overall, there were no significant differences between Black and White women. Our data indicate that the prevalence and degree of facial and body terminal hair growth, as assessed by the mFG score, is similar in Black and White women and that an mFG of at least 3 signals the population of women whose hair growth falls out of the norm.

  19. Suicides, homicides, accidents, and other external causes of death among blacks and whites in the Southern Community Cohort Study.

    Directory of Open Access Journals (Sweden)

    Jennifer S Sonderman

    Full Text Available Prior studies of risk factors associated with external causes of death have been limited in the number of covariates investigated and external causes examined. Herein, associations between numerous demographic, lifestyle, and health-related factors and the major causes of external mortality, such as suicide, homicide, and accident, were assessed prospectively among 73,422 black and white participants in the Southern Community Cohort Study (SCCS. Hazard ratios (HR and 95% confidence intervals (CI were calculated in multivariate regression analyses using the Cox proportional hazards model. Men compared with women (HR = 2.32; 95% CI: 1.87-2.89, current smokers (HR = 1.74; 95% CI: 1.40-2.17, and unemployed/never employed participants at the time of enrollment (HR = 1.67; 95% CI 1.38-2.02 had increased risk of dying from all external causes, with similarly elevated HRs for suicide, homicide, and accidental death among both blacks and whites. Blacks compared with whites had lower risk of accidental death (HR = 0.46; 95% CI: 0.38-0.57 and suicide (HR = 0.55; 95% CI: 0.31-0.99. Blacks and whites in the SCCS had comparable risks of homicide death (HR = 1.05; 95% CI: 0.63-1.76; however, whites in the SCCS had unusually high homicide rates compared with all whites who were resident in the 12 SCCS states, while black SCCS participants had homicide rates similar to those of all blacks residing in the SCCS states. Depression was the strongest risk factor for suicide, while being married was protective against death from homicide in both races. Being overweight/obese at enrollment was associated with reduced risks in all external causes of death, and the number of comorbid conditions was a risk factor for iatrogenic deaths. Most risk factors identified in earlier studies of external causes of death were confirmed in the SCCS cohort, in spite of the low SES of SCCS participants. Results from other epidemiologic cohorts are needed to confirm the novel findings

  20. Transcriptome analysis of genes involved in anthocyanins biosynthesis and transport in berries of black and white spine grapes (Vitis davidii).

    Science.gov (United States)

    Sun, Lei; Fan, Xiucai; Zhang, Ying; Jiang, Jianfu; Sun, Haisheng; Liu, Chonghuai

    2016-01-01

    The color of berry skin is an important economic trait for grape and is essentially determined by the components and content of anthocyanins. The fruit color of Chinese wild grapes is generally black, and the profile of anthocyanins in Chinese wild grapes is significantly different from that of Vitis vinifera . However, V. davidii is the only species that possesses white berry varieties among Chinese wild grape species. Thus, we performed a transcriptomic analysis to compare the difference of transcriptional level in black and white V. davidii , in order to find some key genes that are related to anthocyanins accumulation in V. davidii . The results of anthocyanins detection revealed that 3,5- O -diglucoside anthocyanins is the predominant anthocyanins in V. davidii . It showed obvious differences from V. vinifera in the profile of the composition of anthocyanins. The transcriptome sequencing by Illumina mRNA-Seq technology generated an average of 57 million 100-base pair clean reads from each sample. Differential gene expression analysis revealed thousands of differential expression genes (DEGs) in the pairwise comparison of different fruit developmental stages between and within black and white V. davidii . After the analysis of functional category enrichment and differential expression patterns of DEGs, 46 genes were selected as the candidate genes. Some genes have been reported as being related to anthocyanins accumulation, and some genes were newly found in our study as probably being related to anthocyanins accumulation. We inferred that 3AT (VIT_03s0017g00870) played an important role in anthocyanin acylation, GST4 (VIT_04s0079g00690) and AM2 (VIT_16s0050g00910) played important roles in anthocyanins transport in V. davidii . The expression of some selected DEGs was further confirmed by quantitative real-time PCR (qRT-PCR). The present study investigated the transcriptomic profiles of berry skin from black and white spine grapes at three fruit developmental

  1. Differences in the associations between gambling problem severity and psychiatric disorders among black and white adults: findings from the National Epidemiologic Survey on Alcohol and Related Conditions.

    Science.gov (United States)

    Barry, Declan T; Stefanovics, Elina A; Desai, Rani A; Potenza, Marc N

    2011-01-01

    We examined differences in the associations of gambling problem severity and psychiatric disorders among a nationally representative sample of 32,316 black and white adults. Black respondents were more likely than white ones to exhibit problem or pathological gambling (PPG) and a stronger relationship between subsyndromal gambling and any mood disorder, hypomania, and any substance use disorder. Differences in the patterns of co-occurring disorders between syndromal and particularly subsyndromal levels of gambling in black and white respondents indicate the importance of considering race-related factors in mental health prevention and treatment strategies.  American Academy of Addiction Psychiatry.

  2. Trajectories of body mass and self-concept in black and white girls: the lingering effects of stigma.

    Science.gov (United States)

    Mustillo, Sarah A; Hendrix, Kimber L; Schafer, Markus H

    2012-03-01

    As a stigmatizing condition, obesity may lead to the internalization of devalued labels and threats to self-concept. Modified labeling theory suggests that the effects of stigma may outlive direct manifestations of the discredited characteristic itself. This article considers whether obesity's effects on self-concept linger when obese youth enter the normal body mass range. Using longitudinal data from the National Growth and Health Study on 2,206 black and white girls, we estimated a parallel-process growth mixture model of body mass linked to growth models of body image discrepancy and self-esteem. We found that discrepancy was higher and self-esteem lower in formerly obese girls compared to girls always in the normal range and comparable to chronically obese girls. Neither body image discrepancy nor self-esteem rebounded in white girls despite reduction in body mass, suggesting that the effects of stigma linger. Self-esteem, but not discrepancy, did rebound in black girls.

  3. Exploring racial disparities in CHD mortality between blacks and whites across the United States: A geographically weighted regression approach

    Science.gov (United States)

    Gebreab, Samson Y.; Diez Roux, Ana V.

    2012-01-01

    Coronary heart disease (CHD) mortality is one of the major contributors to racial disparities in health in the United States (US). We examined spatial heterogeneity in black–white differences in CHD mortality across the US and assessed the contributions of poverty and segregation. We used county-level, age-adjusted CHD mortality rates for blacks and whites in the continental US between 1996 and 2006. Geographically weighted regression was employed to assess spatial heterogeneity. There was significant spatial heterogeneity in black–white differences in CHD mortality (median black–white difference 17.7 per 100,000, 25th–75th percentile (IQR): 4.0, 34.0, P value for spatial non-stationarity racial disparities in CHD mortality. Additional research to identify the individual and contextual factors that explain the local variations in racial disparities is warranted. PMID:22835483

  4. Daytime birth and parturition assistant behavior in wild black-and-white snub-nosed monkeys (Rhinopithecus bieti) Yunnan, China.

    Science.gov (United States)

    Ding, Wei; Yang, Le; Xiao, Wen

    2013-03-01

    Few quantitative descriptions of parturition behavior have been reported in wild nonhuman primates because the majority of births occur at night. We have recorded a daytime birth event of a primiparous black-and-white snub-nosed monkey (Rhinopithecus bieti). The partum stage lasted 4 min 30 s, and the female skillfully severed the umbilical cord, ingested the placenta, and held and licked the newborn infant. During this period, the laboring female received delivery assistance from a multiparous female in same one-male unit (OMU) and female juveniles from same OMU showed great interesting during the partum. Our case study suggested that there might be considerable individual variation in birth-related behaviors. Copyright © 2013 Elsevier B.V. All rights reserved.

  5. Heart Disease Death Rates Among Blacks and Whites Aged ≥35 Years - United States, 1968-2015.

    Science.gov (United States)

    Van Dyke, Miriam; Greer, Sophia; Odom, Erika; Schieb, Linda; Vaughan, Adam; Kramer, Michael; Casper, Michele

    2018-03-30

    Heart disease is the leading cause of death in the United States. In 2015, heart disease accounted for approximately 630,000 deaths, representing one in four deaths in the United States. Although heart disease death rates decreased 68% for the total population from 1968 to 2015, marked disparities in decreases exist by race and state. 1968-2015. The National Vital Statistics System (NVSS) data on deaths in the United States were abstracted for heart disease using diagnosis codes from the eighth, ninth, and tenth revisions of the International Classification of Diseases (ICD-8, ICD-9, and ICD-10) for 1968-2015. Population estimates were obtained from NVSS files. National and state-specific heart disease death rates for the total population and by race for adults aged ≥35 years were calculated for 1968-2015. National and state-specific black-white heart disease mortality ratios also were calculated. Death rates were age standardized to the 2000 U.S. standard population. Joinpoint regression was used to perform time trend analyses. From 1968 to 2015, heart disease death rates decreased for the total U.S. population among adults aged ≥35 years, from 1,034.5 to 327.2 per 100,000 population, respectively, with variations in the magnitude of decreases by race and state. Rates decreased for the total population an average of 2.4% per year, with greater average decreases among whites (2.4% per year) than blacks (2.2% per year). At the national level, heart disease death rates for blacks and whites were similar at the start of the study period (1968) but began to diverge in the late 1970s, when rates for blacks plateaued while rates for whites continued to decrease. Heart disease death rates among blacks remained higher than among whites for the remainder of the study period. Nationwide, the black-white ratio of heart disease death rates increased from 1.04 in 1968 to 1.21 in 2015, with large increases occurring during the 1970s and 1980s followed by small but steady

  6. Necrotizing Meningoencephalitis in a Captive Black and White Ruffed Lemur (Varecia variegata variegata) Caused by Acanthamoeba T4 Genotype.

    Science.gov (United States)

    Gaide, N; Pelandakis, M; Robveille, C; Albaric, O; Jouvion, G; Souchon, M; Risler, A; Abadie, J

    2015-11-01

    A mature male, black and white ruffed lemur (Varecia variegata variegata) died in a zoological garden after a 4-day history of lethargy and non-responsive convulsions. Necropsy and histopathological examinations revealed acute necrotizing and haemorrhagic meningoencephalitis with intralesional amoebas confirmed by immunohistochemistry. Acanthamoeba T4 genotype was identified as the causative agent of the brain lesion, based on amplification and sequencing of 18S ribosomal RNA genes. The presence of free-living amoebas in water and mud from the lemur's environment was investigated by morphological and molecular analyses. The two predominant genera, representing 80% of isolated amoebas, were Naegleria spp. and Acanthamoeba spp. All Acanthamoeba isolates belonged to the T4 genotype. To the author's knowledge, this is the first report of a meningoencephalitis due to Acanthamoeba T4 genotype in Lemuridae with concurrent analysis of pathological tissues and environment. Copyright © 2015 Elsevier Ltd. All rights reserved.

  7. Resource seasonality and reproduction predict fission-fusion dynamics in black-and-white ruffed lemurs (Varecia variegata).

    Science.gov (United States)

    Baden, Andrea L; Webster, Timothy H; Kamilar, Jason M

    2016-02-01

    Ruffed lemurs (genus Varecia) are often described as having a flexible social organization, such that both cohesive (low fission-fusion dynamics) and fluid (high fission-fusion dynamics) grouping patterns have been observed. In ruffed lemur communities with high fission-fusion dynamics, group members vary in their temporal and spatial dispersion throughout a communally defended territory. These patterns have been likened to those observed in several haplorrhine species that exhibit the most fluid types of fission-fusion social organization (e.g., Pan and Ateles). To substantiate and further refine these claims, we describe the fission-fusion dynamics of a black-and-white ruffed lemur (Varecia variegata) community at Mangevo, an undisturbed primary rainforest site in Ranomafana National Park, Madagascar. We collected instantaneous group scan samples from August 2007-December 2008 (4,044 observation hours) to study and characterize patterns of subgroup size, composition, cohesion, and social association. In 16 consecutive months, we never found all members of the community together. In fact, individuals spent nearly half of their time alone. Subgroups were small, cohesive, and typically of mixed-sex composition. Mixed-sex subgroups were significantly larger, less cohesive, and more common than either male-only or female-only subgroups. Subgroup dynamics were related to shifts in climate, phenology of preferred fruit species, and female reproductive state. On average, association indices were low. Males and females were equally gregarious; however, adult male-male associations were significantly weaker than any other association type. Results presented herein document striking differences in fission-fusion dynamics between black-and-white ruffed lemurs and haplorrhines, while also demonstrating many broad-scale similarities to haplorrhine taxa that possess the most fluid fission-fusion societies. © 2015 Wiley Periodicals, Inc.

  8. Stigma and Postpartum Depression Treatment Acceptability Among Black and White Women in the First Six-Months Postpartum.

    Science.gov (United States)

    Bodnar-Deren, Susan; Benn, E K T; Balbierz, Amy; Howell, E A

    2017-07-01

    Objective To measure stigma associated with four types of postpartum depression therapies and to estimate the association between stigma and the acceptance of these therapies for black and white postpartum mothers. Methods Using data from two postpartum depression randomized trials, this study included 481 black and white women who gave birth in a large urban hospital and answered a series of questions at 6-months postpartum. Survey items included socio demographic and clinical factors, attitudes about postpartum depression therapies and stigma. The associations between race, stigma, and treatment acceptability were examined using bivariate and multivariate analyses. Results Black postpartum mothers were less likely than whites to accept prescription medication (64 vs. 81%, p = 0.0001) and mental health counseling (87 vs. 93%, p = 0.001) and more likely to accept spiritual counseling (70 vs. 52%, p = 0.0002). Women who endorsed stigma about receipt of postpartum depression therapies versus those who did not were less likely to accept prescription medication, mental health and spiritual counseling for postpartum depression. Overall black mothers were less likely to report stigma associated with postpartum depression therapies. In adjusted models, black women versus white women remained less likely to accept prescription medication for postpartum depression (OR = 0.42, 95% CI 0.24-0.72) and stigma did not explain this difference. Conclusions Although treatment stigma is associated with lower postpartum depression treatment acceptance, stigma does not explain the lower levels of postpartum depression treatment acceptance among black women. More research is needed to understand treatment barriers for postpartum depression, especially among black women.

  9. Understanding racial HIV/STI disparities in black and white men who have sex with men: a multilevel approach.

    Directory of Open Access Journals (Sweden)

    Patrick S Sullivan

    Full Text Available The reasons for black/white disparities in HIV epidemics among men who have sex with men have puzzled researchers for decades. Understanding reasons for these disparities requires looking beyond individual-level behavioral risk to a more comprehensive framework.From July 2010-December 2012, 803 men (454 black, 349 white were recruited through venue-based and online sampling; consenting men were provided HIV and STI testing, completed a behavioral survey and a sex partner inventory, and provided place of residence for geocoding. HIV prevalence was higher among black (43% versus white (13% MSM (prevalence ratio (PR 3.3, 95% confidence interval (CI: 2.5-4.4. Among HIV-positive men, the median CD4 count was significantly lower for black (490 cells/µL than white (577 cells/µL MSM; there was no difference in the HIV RNA viral load by race. Black men were younger, more likely to be bisexual and unemployed, had less educational attainment, and reported fewer male sex partners, fewer unprotected anal sex partners, and less non-injection drug use. Black MSM were significantly more likely than white MSM to have rectal chlamydia and gonorrhea, were more likely to have racially concordant partnerships, more likely to have casual (one-time partners, and less likely to discuss serostatus with partners. The census tracts where black MSM lived had higher rates of poverty and unemployment, and lower median income. They also had lower proportions of male-male households, lower male to female sex ratios, and lower HIV diagnosis rates.Among black and white MSM in Atlanta, disparities in HIV and STI prevalence by race are comparable to those observed nationally. We identified differences between black and white MSM at the individual, dyadic/sexual network, and community levels. The reasons for black/white disparities in HIV prevalence in Atlanta are complex, and will likely require a multilevel framework to understand comprehensively.

  10. Racial and Socioeconomic Status Differences in Depressive Symptoms among Black and White Youth: An Examination of the Mediating Effects of Family Structure, Stress and Support

    Science.gov (United States)

    Miller, Byron; Taylor, John

    2012-01-01

    Stress research shows that race, socioeconomic status (SES), and family context significantly impact an adolescent's psychological well-being, yet little is known about the mediating effects of family context on racial and SES differences in depressive symptoms among Black and White youth. We investigate these associations using a sample of 875…

  11. Comparing Sexual Harassment Subtypes among Black and White Women by Military Rank: Double Jeopardy, the Jezebel, and the Cult of True Womanhood

    Science.gov (United States)

    Buchanan, NiCole T.; Settles, Isis H.; Woods, Krystle C.

    2008-01-01

    Drawing upon feminist analyses of double jeopardy and the cult of true womanhood, we examine race, rank, sexual harassment frequency, and psychological distress for Black and White female military personnel (N= 7,714). Results indicated that White women reported more overall sexual harassment, gender harassment, and crude behavior, whereas Black…

  12. Survey of minerals and fat-soluble vitamins in captive black and white ruffed lemurs (Varecia variegata).

    Science.gov (United States)

    Crawford, Graham C; Puschner, Birgit; Dierenfeld, Ellen S; Dunker, Freeland

    2009-12-01

    Serum and whole blood samples from 64 clinically normal captive black and white ruffed lemurs (Varecia variegata), aged 6 mo to 32 yr, were analyzed to survey mineral and fat-soluble vitamin concentrations. All animals were fed a commercial primate food and a wide range of fruits and vegetables. Specific commercial diet information was available for 52 animals that were fed one of 10 different diets. Data analysis showed no differences in the analytes attributable to sex or access to natural ultraviolet light. Serum phosphorus (range: 1.4-3.1 mmol/L) was significantly higher and retinol (range: 0.38-1.23 micromol/L) was significantly lower in young animals (Varecia rubra), a closely related species. Selenium (range: 3.5-7.7 micromol/L) was within the range expected for a mammal, but higher than concentrations reported in wild V rubra. Zinc (range: 9.2-62.7 micromol/L) was similar to concentrations reported in V. rubra. Calcidiol (range: <12.5-144.8 nmol/L) and retinol (range: 0.38-2.95 micromol/L) were both lower and higher than concentrations reported in V. rubra. Lower serum calcidiol concentration correlated with lower commercial dietary vitamin D3. Alpha-tocopherol (range: 1.2-17.6 micromol/L) and y-tocopherol (range: 0.3-3.9 micromol/L) were within a range expected in a captive frugivorous primate but higher than concentrations found in wild V. rubra.

  13. Beliefs among black and white adults about causes and prevention of cardiovascular disease: the Minnesota Heart Survey.

    Science.gov (United States)

    Folsom, A R; Sprafka, J M; Luepker, R V; Jacobs, D R

    1988-01-01

    We assessed beliefs about the symptoms, causes, and prevention of cardiovascular disease in population-based surveys of black and white Twin Cities adults in 1985-86. Whites had a generally higher awareness of heart attack symptoms than did blacks; 72% of blacks and 85% of whites mentioned chest pain as a likely symptom. Sixty-five percent of blacks and 76% of whites correctly offered at least one of the three major, modifiable risk factors (smoking, hypertension, and high cholesterol in blood or diet) as likely causes of cardiovascular disease. However, less than 5% of respondents mentioned all three major risk factors. The most frequent response offered as a cause was stress/worry (54% of blacks, 51% of whites). Individuals with higher educational levels generally responded more correctly than those with less education. After accounting for differences in educational level, blacks demonstrated a higher awareness of hypertension as a risk factor, whereas whites were more knowledgeable about smoking and cholesterol. In light of the high percentage of adults still lacking awareness about cardiovascular risk, public education about prevention should continue. Such efforts are broadly desirable but may be most effectively targeted toward minorities and groups with less education, in whom awareness is low and risk of disease is high.

  14. Religious Engagement in a Risky Family Model Predicting Health in Older Black and White Seventh-day Adventists.

    Science.gov (United States)

    Morton, Kelly R; Lee, Jerry W; Haviland, Mark G; Fraser, Gary E

    2012-11-01

    In a structural equation model, associations among latent variables - Child Poverty, Risky Family exposure, Religious Engagement, Negative Social Interactions, Negative Emotionality, and Perceived Physical Health - were evaluated in 6,753 Black and White adults aged 35-106 years (M = 60.5, SD = 13.0). All participants were members of the Seventh-day Adventist church surveyed in the Biopsychosocial Religion and Health Study (BRHS). Child Poverty was positively associated with both Risky Family exposure (conflict, neglect, abuse) and Religious Engagement (intrinsic religiosity, religious coping, religiousness). Risky Family was negatively associated with Religious Engagement and positively associated with both Negative Social Interactions (intrusive, failed to help, insensitive, rejecting) and Negative Emotionality (depression, negative affect, neuroticism). Religious Engagement was negatively associated with Negative Emotionality and Negative Social Interactions at a given level of risky family. Negative Social Interactions was positively associated with Negative Emotionality, which had a direct, negative effect on Perceived Physical Health. All constructs had indirect effects on Perceived Physical Health through Negative Emotionality. The effects of a risky family environment appear to be enduring, negatively affecting one's adult religious life, emotionality, social interactions, and perceived health. Religious engagement, however, may counteract the damaging effects of early life stress.

  15. Association between socioeconomic status (SES) and lower urinary tract symptom (LUTS) severity among black and white men.

    Science.gov (United States)

    Fowke, Jay H; Munro, Heather; Signorello, Lisa B; Blot, William J; Penson, David F

    2011-11-01

    A higher prevalence of moderate or severe lower urinary tract symptoms (LUTS) has been reported among African Americans, but the separate effects of race and socioeconomic status (SES) on LUTS severity are unclear. We investigated the roles of education, income, marital status, and source of health insurance on LUTS reporting among black and white U.S. men. A prospective cohort within the Southern Community Cohort Study The International Prostate Symptom Score (IPSS) was completed during follow-up by 2488 white men and 4188 black men. Multivariable linear and logistic regression methods were used to compare IPSS scores and LUTS severity by race and SES after adjusting for age, duration of follow-up, benign prostatic hyperplasia (BPH) treatment, source of recruitment, smoking status, BMI, mode of follow-up ascertainment, and prior diagnosis of hypertension, diabetes, or hypercholesterolemia. Overall IPSS scores and the prevalence of moderate/severe LUTS were not significantly associated with race. Instead, higher IPSS scores were significantly associated (p Education was also marginally associated with IPSS scores (p = 0.06) among black men. Furthermore, moderate/severe LUTS onset was significantly associated with a household income less than $15,000/year (OR = 1.56 (1.23, 1.96)) and having private health insurance (OR = 0.79 (0.67, 0.93)). Social or behavioral factors related to SES affect LUTS reporting, and suggests a potential affect on BPH diagnosis.

  16. Birth seasonality and pattern in black-and-white snub-nosed monkeys (Rhinopithecus bieti) at Mt. Lasha, Yunnan.

    Science.gov (United States)

    Li, Jin-Fa; He, Yu-Chao; Huang, Zhi-Pang; Wang, Shuang-Jin; Xiang, Zuo-Fu; Zhao, Juan-Jun; Xiao, Wen; Cui, Liang-Wei

    2014-11-18

    Seasonal variation in environmental factors is vital to the regulation of seasonal reproduction in primates. Consequently, long-term systematic data is necessary to clarify the birth seasonality and pattern of primates in highly seasonal environments. This study indicated that black-and-white snub-nosed monkeys (Rhinopithecus bieti) at Mt. Lasha exhibited strict birth seasonality with a pulse model. Infants were born with a certain degree of synchronization. Birth distribution showed three birth peaks, and the birth pattern showed a "V" style in even-numbered years and a gradual increase in odd-numbered years. The beginning date, end date and median birth date were earlier in even-numbered years than those in odd-numbered years. The higher latitude of their habitats, earlier birth date, shorter birth period, fewer birth peaks and stronger birth synchrony might be adaptations for strongly seasonal variation in climate and food resources. After the summer solstice when daylight length began to gradually shorten, R. bieti at Mt. Lasha started to breed during the period with the highest environmental temperature and food availability, which implied that photoperiod may be the proximate factor triggering the onset of estrus and mating. It appears that R. bieti coincided conception and mid-lactation with the peak in staple foods, and weaning with the peak in high quality of foods. Thus, food availability was the ultimate factor regulating reproductive seasonality, and photoperiod was the proximate factor fine-turning the coordination between seasonal breeding and food availability.

  17. Differences in quit attempts between non-Hispanic Black and White daily smokers: the role of smoking motives.

    Science.gov (United States)

    Bacio, Guadalupe A; Guzman, Iris Y; Shapiro, Jenessa R; Ray, Lara A

    2014-12-01

    The prevalence of smoking across racial/ethnic groups has declined over the years, yet racial health disparities for smoking persist. Studies indicate that non-Hispanic Black smokers attempt to quit smoking more often compared to non-Hispanic White smokers but are less successful at doing so. Research suggests that motives to quit smoking differ by race, however, less is known about the role of motives to smoke in explaining racial differences in attempts to quit smoking. This study examined whether smoking motives accounted for the differential rates in quit attempts between non-Hispanic Black (n=155) and non-Hispanic White (n=159) smokers. Data were culled from a larger study of heavy-drinking smokers. The Wisconsin Index of Smoking Dependence Motives (WISDM) assessed motives to smoke. As expected, Black and White smokers reported similar smoking patterns, yet Black smokers reported higher rates of failed attempts to quit smoking than White smokers. Findings indicated that Black, compared to White, smokers endorsed lower scores in the negative reinforcement, positive reinforcement, and taste WISDM subscales and scores in these subscales mediated the relationship between race and quit attempts. In this study, Blacks, compared to Whites, endorsed lower motives to smoke, which are generally associated with successful quit attempts, yet they experienced more failed attempts to quit smoking. This study demonstrates racial health disparities at the level of smoking motives and suggests that Black smokers remain vulnerable to failed quit attempts despite reporting lower motives to smoke. Published by Elsevier Ltd.

  18. Differences in Electronic Cigarette Awareness, Use History, and Advertisement Exposure Between Black and White Hospitalized Cigarette Smokers.

    Science.gov (United States)

    Baumann, Angela Warren; Kohler, Connie; Kim, Young-il; Cheong, JeeWon; Hendricks, Peter; Bailey, William C; Harrington, Kathleen F

    2015-12-01

    E-cigarette use has increased rapidly over the past decade. There is growing concern about e-cigarette use and advertising given limited regulation of these products. This cross-sectional study reports on data collected at baseline from hospitalized cigarette smokers (N=944) recruited in monthly cohorts between December 2012 and September 2013. Participants were queried regarding e-cigarette awareness and use, and number and sources of e-cigarette advertisement exposures in the previous 6 months. Most Whites (99%) reported ever hearing of an e-cigarette compared to 96% of Blacks (pWhites reported ever using an e-cigarette compared to 30% of Blacks (pWhites reported 56% greater advertisement exposure than Blacks (mean=25 vs. 8 in month 1 to 79 vs. 45 in month 9, respectively; pWhites reported more advertisement exposure from stores and the Internet, and Blacks reported more advertisement exposure from radio or television. Results suggest that e-cigarette marketing is beginning to breach the Black population who are, as a consequence, "catching up" with Whites with regard to e-cigarette use. Given the significant disparities for smoking-related morbidity and mortality between Blacks and Whites, these findings identify new areas for future research and policy.

  19. Affirmative Action Application or Black and White in South Africa Higher Education Institutions: Is it the way forward or not?

    Directory of Open Access Journals (Sweden)

    Christiena Maria van der Bank

    2015-11-01

    Full Text Available We will, demonstrate what affirmative action entails, its origin and the relationship with discrimination and equality. The paper will also highlight the implementation of affirmative action in the Higher Education sector in South Africa.  Affirmative action or black and white are the additional corrective steps which must be taken in order that those who have been historically disadvantage by unfair discrimination before 1994 are able to derive full benefits from an equitable employment environment. While there has been a significant increase in the number of women appointed into management positions, the proportion in relation to the total number of women in senior posts such as those of Vice Chancellors, Deputy-Vice Chancellors and Executive Deans still remains problematic. Considerations should be taken with regard to issues of access, equity and relevance.  Indeed, affirmative action should be located within a rigorous process that will ensure that those who are for example, promoted to senior positions both in private and public sectors are able to demonstrate strategic thinking and action, quality execution of tasks, efficiency and effectiveness in achieving organisational goals.  This will also be followed by a brief South Africa’s case study of different entities (South African Breweries and Sowetan Newspaper.  A comparison of USA’s affirmative action and whether “there is a light at the end of a tunnel – affirmative action” will be done.

  20. The role of leaf toughness on foraging efficiency in Angola black and white colobus monkeys (Colobus angolensis palliatus).

    Science.gov (United States)

    Dunham, Noah T; Lambert, Alexander L

    2016-10-01

    Examining the relationships among foraging behavior, food mechanical properties, and masticatory morphology is a bourgeoning research topic among behavioral ecologists and functional morphologists. The purpose of this study was to assess the degree to which leaf toughness influences foraging efficiency with regard to ingestion rate, masticatory investment, and masticatory rate. Diet and feeding data were collected on adults from three groups of Colobus angolensis palliatus in the Diani Forest, Kenya, from July 2014 to December 2015. Ingestion rates were estimated by counting the number of items consumed during feeding bouts and multiplying this value by the mean mass of a particular food item. The number of mastications was also counted during 3-5 minute focal periods. Mechanical toughness of commonly eaten young leaves (n = 27 species) and mature leaves (n = 13 species) was recorded using a toughness tester equipped with a razor blade. Ingestion rates (g/min) negatively correlated with leaf toughness (r(2)  = 0.73; p toughness (r(2)  = 0.72; p toughness values (r(2)  = 0.09; p = 0.07). Our findings highlight the degree to which toughness values can vary among leaves and how this variation can dramatically influence ingestion rates and chewing efficiency in black and white colobus monkeys. Studies that link food mechanical properties with oral processing behaviors will ultimately provide important context for understanding craniofacial and dentognathic traits in primates. © 2016 Wiley Periodicals, Inc.

  1. All-cause and cause-specific mortality among Black and White North Carolina state prisoners, 1995-2005

    Science.gov (United States)

    Wohl, David A.; Schoenbach, Victor J.

    2011-01-01

    Purpose We compared mortality rates among state prisoners and other state residents to identify prisoners’ healthcare needs Methods We linked North Carolina prison records with state death records for 1995-2005 to estimate all-cause and cause-specific death rates among Black and White male prisoners aged 20-79 years, and used standardized mortality ratios (SMRs) to compare these observed deaths with the expected number based on death rates among state residents Results The all-cause SMR of Black prisoners was 0.52 (95%CI: 0.48 0.57), with fewer deaths than expected from accidents, homicides, cardiovascular disease and cancer. The all-cause SMR of White prisoners was 1.12 (95%CI: 1.01, 1.25) with fewer deaths than expected for accidents, but more deaths than expected from viral hepatitis, liver disease, cancer, chronic lower respiratory disease, and HIV. Conclusions Mortality of Black prisoners was lower than that of Black state residents for both traumatic and chronic causes of death. Mortality of White prisoners was lower than that of White state residents for accidents, but higher for several chronic causes of death. Future studies should investigate the effect of prisoners’ pre-incarceration and in-prison morbidity, the prison environment, and prison healthcare on prisoners’ patterns of mortality. PMID:21737304

  2. Study on the Consumption Speed of Forages and Consumption Indices of Forages in Romanian Black and White Cows

    Directory of Open Access Journals (Sweden)

    Silvia Erina

    2011-10-01

    Full Text Available The aim of the paper was to determine the consumption speed of forages (g⁄min. and consumption indices (quantity and consumption duration of forages, administered in two portions, to Romanian Black and White cows. The administration order of forages (fibrous-succulents (O1 and succulents-fibrous (O2 order, the number of portion (P1 and P2 and number of feeding (F1 and F2 were the experimental variants. Data was computed by ANOVA/MANOVA. Results showed that the administration order of forages had an influence on the speed consumption, when was given before silage (O1, hay had a higher consumption speed (41.35 g/min decreasing to 31.41 g/min when hay was fed after the silage (O2. For silage the consumption speed was 190.33 g/min in O1 and increased to 228.87 g/min when was given before hay (O2. Between portion 1 (P1 and portion 2 (P2, the significant difference (p<0.001 was for silage consumption speed in favour portion P2. Regarding the number of feedings per portion, always the consumption speed of the feedstuffs, as well as the amount consumed, was higher in the first feeding F1 than in the second feeding F2.

  3. Interpersonal discrimination and health-related quality of life among black and white men and women in the United States.

    Science.gov (United States)

    Sellers, Sherrill; Cherepanav, Dasha; Hanmer, Janel; Fryback, Dennis G; Palta, Mari

    2013-08-01

    We assessed associations between discrimination and health-related quality of life among black and white men and women in the United States. We examined data from the National Health Measurement Study, a nationally representative sample of 3,648 adults aged 35-89 in the non-institutionalized US population. These data include self-reported lifetime and everyday discrimination as well as several health utility indexes (EQ-5D, HUI3, and SF-6D). Multiple regression was used to compute mean health utility scores adjusted for age, income, education, and chronic diseases for each race-by-gender subgroup. Black men and women reported more discrimination compared to white men and women. Health utility tended to be worse as reported discrimination increased. With a few exceptions, differences between mean health utility scores in the lowest and highest discrimination groups exceeded the 0.03 difference generally considered to be a clinically significant difference. Persons who experienced discrimination tended to score lower on health utility measures. The study also revealed a complex relationship between experiences of discrimination and race and gender. Because of these differential social and demographic relationships caution is urged when interpreting self-rated health measures in research, clinical, and policy settings.

  4. Black and white homeless men: differences in self-actualization, willingness to use services, history of being homeless, and subjective health ratings.

    Science.gov (United States)

    Sumerlin, J R; Privette, G; Bundrick, C M

    1993-06-01

    In this analysis of racial confounds in the study of homelessness and self-actualization, 100 black and 71 white homeless men from a mission and a street environment were compared to test the hypothesis that the prototypes of black and white homeless men are different. Discriminant analysis of items from the Short Index of Self-actualization of Jones and Crandall, willingness to use services, history of homelessness, and self-reported health ratings correctly classified 83.6% of black and white homeless men (Wilks' lambda = .46, p < .0001). The prototypic black homeless person and the prototypic white homeless person have strong differences so race must be evaluated in studies of such groups.

  5. Emotions in "Black and White" or Shades of Gray? How We Think About Emotion Shapes Our Perception and Neural Representation of Emotion.

    Science.gov (United States)

    Satpute, Ajay B; Nook, Erik C; Narayanan, Sandhya; Shu, Jocelyn; Weber, Jochen; Ochsner, Kevin N

    2016-11-01

    The demands of social life often require categorically judging whether someone's continuously varying facial movements express "calm" or "fear," or whether one's fluctuating internal states mean one feels "good" or "bad." In two studies, we asked whether this kind of categorical, "black and white," thinking can shape the perception and neural representation of emotion. Using psychometric and neuroimaging methods, we found that (a) across participants, judging emotions using a categorical, "black and white" scale relative to judging emotions using a continuous, "shades of gray," scale shifted subjective emotion perception thresholds; (b) these shifts corresponded with activity in brain regions previously associated with affective responding (i.e., the amygdala and ventral anterior insula); and (c) connectivity of these regions with the medial prefrontal cortex correlated with the magnitude of categorization-related shifts. These findings suggest that categorical thinking about emotions may actively shape the perception and neural representation of the emotions in question. © The Author(s) 2016.

  6. Does race matters in consumers' stated preferences for water and carbon footprints labelled food products? Insights from black and white South Africans

    Science.gov (United States)

    Owusu-Sekyere, Enoch; Jordaan, Henry

    2017-04-01

    In recent years, governments, policy-makers, and managers of private food companies and agribusinesses are interested in understanding how consumers will react to environmentally sustainable attributes and information on food product labels. This study examines consumers' stated preferences for water and carbon footprints labelled food products from the viewpoint of black and white South Africans. Discrete choice experimental data was collected from black and white consumers to possibly assess cross-ethnic variations in preferences for environmentally sustainable products. Two widely purchased livestock products were chosen for the choice experiment. We found that consumers' preferences for environmentally sustainable attributes vary significantly between black and white South Africans. Our findings revealed that there are profound heterogeneous consumer segments within black and white respondents. The heterogeneity within both sub-samples is better explained at the segment level, rather than at individual level. For both product categories, the findings revealed that there are more distinct consumer segments among black respondents, relative to white respondents. The black respondents consist of water sustainability advocates, carbon reduction advocates, keen environmentalist and environmental neutrals. The white respondents entail keen environmentalist, environmental cynics, and environmental neutrals. The inherent significant variations in preferences for environmentally sustainable attributes across segments and racial groups would help in formulating feasible, and segment-specific environmental sustainability policies and marketing strategies aimed at changing consumers' attitude towards environmentally sustainable products. Demographic targeting of consumer segments, sustainability awareness and segment-specific educational campaigns meant to enhance subjective and objective knowledge on environmental sustainability are important tools for food companies and

  7. Differences in the Associations between Gambling Problem Severity and Psychiatric Disorders among Black and White Adults: Findings from the National Epidemiologic Survey on Alcohol and Related Conditions

    OpenAIRE

    Barry, Declan T.; Stefanovics, Elina A.; Desai, Rani A.; Potenza, Marc N.

    2010-01-01

    We examined differences in the associations of gambling problem severity and psychiatric disorders among a nationally representative sample of 32,316 black and white adults. Black respondents were more likely than white ones to exhibit problem or pathological gambling and a stronger relationship between subsyndromal gambling and any mood disorder, hypomania, and any substance use disorder. Differences in the patterns of co-occurring disorders between syndromal and particularly subsyndromal le...

  8. Social Discrimination and Resiliency are not associated with Differences in Prevalent HIV Infection in Black and White Men who have Sex with Men

    Science.gov (United States)

    Peterson, John L.; Bakeman, Roger; Sullivan, Patrick; Millett, Gregorio; Rosenberg, Eli; Salazar, Laura; Di Clemente, Ralph J.; Cooper, Hannah; Kelley, Colleen F.; Mulligan, Mark J.; Frew, Paula; del Rio, Carlos

    2014-01-01

    Objectives To examine associations of homophobia, racism, and resiliency with differences in prevalent HIV infection in black and white MSM. Methods The Involve[ment]t study is a cohort of black and white MSM aged 18–39 years in Atlanta, GA designed to evaluate individual, dyadic, and community level factors that might explain racial disparities in HIV prevalence. Participants were recruited irrespective of HIV serostatus from community-based venues and from Internet ads and were tested for HIV. We assessed respondents’ demographics, whether they had engage in unprotected anal intercourse (UAI) within the past 6 months, and attitudes about perceived homophobia, perceived racism, and personal resiliency. Results Compared to white MSM, black MSM were less likely to report UAI in the past 6 months (OR = 0.59, CI = 0.44–0.80), more likely to be HIV-positive (OR = 5.05, CI = 3.52–7.25) and, among—those HIV-positive—more likely to report not being aware of their HIV infection (OR = 2.58, CI = 1.18–5.65). Greater perceived racism was associated with UAI in the black sample (partial odds ratio [pOR] = 1.48, CI = 1.10–1.99). Overall, perceived homophobia, perceived racism, and resilience were not associated with prevalent HIV infection in our samples. Greater resilience was associated with less perceived homophobia in both black and white samples (Spearman r = −.27, p < .001, for both). Conclusion Future studies of social discrimination at the institutional and network level, than at the individual level, may explain differences in HIV infection in black and white MSM. PMID:24820109

  9. Anxiolytic-like effect of phytoestrogen genistein in rats with long-term absence of ovarian hormones in the black and white model.

    Science.gov (United States)

    Rodríguez-Landa, Juan Francisco; Hernández-Figueroa, Jesús David; Hernández-Calderón, Beatriz Del Carmen; Saavedra, Margarita

    2009-03-17

    Postmenopause is mainly characterized by a reduction of ovarian hormones, which is accompanied by a major incidence of physical disorders and mood swings. Clinical and experimental evidence suggest that phytoestrogens could be used to ameliorate these alterations associated with menopause. However, the phytoestrogen effects on anxiety in rats with long-term absence of ovarian hormones, is unknown. Consequently, in the present study the authors compared the anxiolytic-like effect of phytoestrogen genistein (0.25, 0.5 y 1.0 mg/kg, i.p.) in Wistar rats with 12-weeks postovariectomy in the black and white model and in the open field test, and it was compared with diazepam (1.0 mg/kg, i.p.). In the black and white model, genistein (0.5 y 1.0 mg/kg) and diazepam reduced the latency to enter and increased the time spent into the white compartment; also, significantly increased frequency and time spent in exploration toward white compartment was seen, as compared with the control group (phormones in the black and white model, supporting the hypotheses that phytoestrogens could be used to ameliorate anxiety associated with menopause.

  10. Fast-food intake and diet quality in black and white girls: the National Heart, Lung, and Blood Institute Growth and Health Study.

    Science.gov (United States)

    Schmidt, Marcia; Affenito, Sandra G; Striegel-Moore, Ruth; Khoury, Philip R; Barton, Bruce; Crawford, Patricia; Kronsberg, Shari; Schreiber, George; Obarzanek, Eva; Daniels, Stephen

    2005-07-01

    To examine trends in fast-food consumption and its relationship to calorie, fat, and sodium intake in black and white adolescent girls. A longitudinal multicenter cohort study of the development of obesity and cardiovascular risk factors in black and white female adolescents. Data collection occurred annually using a validated 3-day food record and a food-patterns questionnaire. A biracial and socioeconomically diverse group of 2379 black and white girls recruited from 3 centers. Three-day food records and a food-patterns questionnaire were examined for intake of fast food and its association with nutrient intake. We compared patterns of exposure to fast food and its impact on intake of calories, fat, and sodium. Fast-food intake was positively associated with intake of energy and sodium as well as total fat and saturated fat as a percentage of calories. Fast-food intake increased with increasing age in both races. With increasing consumption of fast food, energy intake increased with an adjusted mean of 1837 kcal for the low fast-food frequency group vs 1966 kcal for the highest fast-food frequency group (Pfood frequency group was 34.3% as opposed to 35.8% in the highest fast-food frequency group (Pfood frequency group (Pfood is a determinant of diet quality in adolescent girls. Efforts to reduce fast-food consumption may be useful in improving diet and risk for future cardiovascular disease.

  11. Does female dominance facilitate feeding priority in black-and-white ruffed lemurs (Varecia variegata) in southeastern Madagascar?

    Science.gov (United States)

    Overdorff, Deborah J; Erhart, Elizabeth M; Mutschler, Thomas

    2005-05-01

    Although many Malagasy lemurs are thought to be female dominant and to have female feeding priority, to date the relationship between these behaviors has been rigorously established only in Lemur catta, and other ways that females might achieve feeding priority have not been examined closely. Erhart and Overdorff [International Journal of Primatology 20:927-940, 1999] suggested that one way female primates achieve feeding priority is to initiate and lead groups to food, thereby gaining access to the food first and positively influencing their food intake compared to other group members. Here we describe female dominance patterns and potential measures of feeding priority in two groups of black-and-white ruffed lemurs (Varecia variegata) that were observed over a 15-month period in southeastern Madagascar. We predicted that the females would 1) be consistently dominant to males, 2) lead groups to food sources more often than males, and 3) have higher feeding rates compared to males when they arrived at food sources first. The results were dissimilar between the study groups. During the study, the oldest adult female in group 1 died. There was no evidence for female dominance in this group, and the remaining (likely natal) female did not lead the group more often, nor did she have a higher food intake than males. Group 1 dispersed shortly after the time frame reported here. In contrast, the resident female in group 2 was dominant to group males (based on agonistic interactions), led the group to food sources more often, and experienced a higher food intake when she arrived first at a food source. How these patterns vary over time and are influenced by the number of females in groups, group stability, food quality, and reproductive condition will be examined in future analyses. Copyright 2005 Wiley-Liss, Inc

  12. Enzyme-linked immunosorbent assay to quantitate serum ferritin in black and white ruffed lemurs (Varecia variegata variegata).

    Science.gov (United States)

    Andrews, Gordon A; Chavey, Patricia Sue; Crawford, Graham

    2005-12-01

    Lemurs in captivity progressively accumulate iron deposits in a variety of organs (hemosiderosis) including duodenum, liver, and spleen throughout their lives. When excessive, the toxic effects of intracellular iron on parenchymal cells, particularly the liver, can result in clinical disease and death. The pathogenesis of excessive iron storage in these species has been attributed to dietary factors related to diets commonly fed in captivity. Tissue iron stores can be directly estimated by tissue biopsy and histologic examination, or quantitated by chemical analysis of biopsy tissue, However, expense and risk associated with anesthesia and surgery prevent routine use of tissue biopsy to assess iron status. A noninvasive means of assessing total body iron stores is needed to monitor iron stores in lemurs to determine whether dietary modification is preventing excessive iron deposition, and to monitor potential therapies such as phlebotomy or chelation. Serum ferritin concentration correlates with tissue iron stores in humans, horses, calves, dogs, cats, and pigs. Serum ferritin is considered the best serum analyte to predict total body iron stores in these species and is more reliable than serum iron or total iron binding capacity, both of which may be affected by disorders unrelated to iron adequacy or excess including hypoproteinemia, chronic infection, hemolytic anemia, hypothyroidism, renal disease, and drug administration. We have developed an enzyme-linked immunosorbent assay to measure serum ferritin in lemurs. The assay uses polyclonal rabbit anti-human ferritin antibodies in a sandwich arrangement. Ferritin isolated from liver and spleen of a black and white ruffed lemur (Varecia variegata variegata) was used as a standard. Ferritin standards were linear from 0 to 50 microg/L. Recovery of purified ferritin from lemur serum varied from 95% to 110%. The within-assay variability was 4.5%, and the assay-to-assay variability for three different samples ranged

  13. Comparison of dietary habits and plans for dietary changes in black and white women seeking bariatric surgery.

    Science.gov (United States)

    McLean, Kendall L; Moore, Carolyn E; Miketinas, Derek C; Champagne, Catherine M

    2018-01-01

    Achieving weight loss after bariatric surgery depends on the individual's ability to sustain lifestyle changes involving dietary modifications. Presurgical dietary assessment is critical to evaluate usual dietary habits and identify the need for intervention before surgery. The objective of this study was to identify usual dietary habits of black and white women seeking bariatric surgery and to examine potential differences between these ethnic groups. An additional aim was to describe participants' plans to change dietary behaviors after surgery. This study examined data from an observational study sponsored by a benefits management group in Louisiana. In this cross-sectional study, a presurgical dietary assessment interview questionnaire collected information on dietary habits. Participants (n = 200) were adult women being screened for bariatric surgery; 54% were white, and 46% were black. Descriptive statistics were calculated and differences between groups were tested using 2-way analysis of the variance. Participants reported consuming fast food 2.9 ± 2.6 times per week, fried foods 2.1 ± 1.8 times per week, and desserts 3.4 ± 3.2 times per week. Blacks reported more frequent consumption of fast food (Psurgery were similar between ethnic groups. Findings indicated that frequent consumption of fast foods, fried foods, desserts, and sugar-sweetened beverages was common among women seeking bariatric surgery. Blacks tended to consume these foods and beverages more often than whites. Current dietary habits and future plans to change dietary behaviors should be addressed before surgery for success. Follow-up studies investigating the assessment instrument's ability to predict dietary adherence and weight loss after surgery are warranted. Copyright © 2018 American Society for Bariatric Surgery. Published by Elsevier Inc. All rights reserved.

  14. Differences in progression to ESRD between black and white patients receiving predialysis care in a universal health care system.

    Science.gov (United States)

    van den Beukel, Tessa O; de Goeij, Moniek C M; Dekker, Friedo W; Siegert, Carl E H; Halbesma, Nynke

    2013-09-01

    Studies performed in the United States showed that blacks progress from CKD to ESRD faster than do whites. Possible explanations are differences in health care system factors. This study investigated whether progression is also faster in a universal health care system, where all patients receive comparable care. Data from the PREdialysis PAtient REcord study, a multicenter follow-up study of patients with CKD who started predialysis care in The Netherlands (1999-2011), were analyzed. Time-dependent Cox proportional hazards models were used to estimate the hazard ratio (HR) for starting renal replacement therapy (RRT), and linear mixed models were used to compare renal function decline (RFD) between blacks and whites. To explore possible mechanisms, analyses were adjusted for patient characteristics. At initiation of predialysis care, blacks (n=49) were younger and had more diabetes mellitus, higher proteinuria levels, and a higher estimated GFR than whites (n=946). Median follow-up time in months was similar (blacks: 13.9 [boundaries of interquartile range (IQR), 5.3 to 19.5]; whites: 13.1 [IQR, 5.1 to 24.0]). For blacks compared with whites, the crude HR for starting RRT within the first 15 months was 0.86 (95% confidence interval [CI], 0.55 to 1.34) and from 15 months onward, 1.93 (95% CI, 1.02 to 3.68), which increased after adjustment. RFD was faster by 0.18 (95% CI, 0.05 to 0.32) ml/min per 1.73 m(2) per month in blacks compared with whites. Blacks receiving predialysis care in a universal health care system have faster disease progression than whites, suggesting that health care system factors have a less influential role than had been thought in explaining black-white differences.

  15. Survival by genotype: patterns at Mc1r are not black and white at the White Sands ecotone.

    Science.gov (United States)

    Des Roches, S; Sollmann, R; Calhoun, K; Rothstein, A P; Rosenblum, E B

    2017-01-01

    Measuring links among genotype, phenotype and survival in the wild has long been a focus of studies of adaptation. We conducted a 4-year capture-recapture study to measure survival by genotype and phenotype in the Southwestern Fence Lizard (Sceloporus cowlesi) at the White Sands ecotone (transition area between white sands and dark soil habitats). We report several unanticipated findings. First, in contrast with previous work showing that cryptic blanched coloration in S. cowlesi from the heart of the dunes is associated with mutations in the melanocortin-1 receptor gene (Mc1r), ecotonal S. cowlesi showed minimal association between colour phenotype and Mc1r genotype. Second, the frequency of the derived Mc1r allele in ecotonal S. cowlesi appeared to decrease over time. Third, our capture-recapture data revealed a lower survival rate for S. cowlesi individuals with the derived Mc1r allele. Thus, our results suggest that selection at the ecotone may have favoured the wild-type allele in recent years. Even in a system where a genotype-phenotype association appeared to be black and white, our study suggests that additional factors - including phenotypic plasticity, epistasis, pleiotropy and gene flow - may play important roles at the White Sands ecotone. Our study highlights the importance of linking molecular, genomic and organismal approaches for understanding adaptation in the wild. Furthermore, our findings indicate that dynamics of natural selection can be particularly complex in transitional habitats like ecotones and emphasize the need for future research that examines the patterns of ongoing selection in other ecological 'grey' zones. © 2016 John Wiley & Sons Ltd.

  16. Sexy media matter: exposure to sexual content in music, movies, television, and magazines predicts black and white adolescents' sexual behavior.

    Science.gov (United States)

    Brown, Jane D; L'Engle, Kelly Ladin; Pardun, Carol J; Guo, Guang; Kenneavy, Kristin; Jackson, Christine

    2006-04-01

    To assess over time whether exposure to sexual content in 4 mass media (television, movies, music, and magazines) used by early adolescents predicts sexual behavior in middle adolescence. An in-home longitudinal survey of 1017 black and white adolescents from 14 middle schools in central North Carolina was conducted. Each teen was interviewed at baseline when he or she was 12 to 14 years old and again 2 years later using a computer-assisted self interview (audio computer-assisted self-interview) to ensure confidentiality. A new measure of each teen's sexual media diet (SMD) was constructed by weighting the frequency of use of 4 media by the frequency of sexual content in each television show, movie, music album, and magazine the teen used regularly. White adolescents in the top quintile of sexual media diet when 12 to 14 years old were 2.2 times more likely to have had sexual intercourse when 14 to 16 years old than those who were in the lowest SMD quintile, even after a number of other relevant factors, including baseline sexual behavior, were introduced. The relationship was not statistically significant for black adolescents after controlling for other factors that were more predictive, including parental disapproval of teen sex and perceived permissive peer sexual norms. Exposure to sexual content in music, movies, television, and magazines accelerates white adolescents' sexual activity and increases their risk of engaging in early sexual intercourse. Black teens appear more influenced by perceptions of their parents' expectations and their friends' sexual behavior than by what they see and hear in the media.

  17. Aerial Photography and Imagery, Ortho-Corrected, Black and white 0.82 feet pixel resolution leaf-off ortho imagery that covers the state of Connecticut., Published in 2004, University of Connecticut.

    Data.gov (United States)

    NSGIC Education | GIS Inventory — Aerial Photography and Imagery, Ortho-Corrected dataset current as of 2004. Black and white 0.82 feet pixel resolution leaf-off ortho imagery that covers the state...

  18. Aerial Photography and Imagery, Ortho-Corrected, One meter black and white digital orthophotographs created in concert with the U.S.G.S., Published in 1992, 1:9600 (1in=800ft) scale, Manitowoc County Government.

    Data.gov (United States)

    NSGIC Local Govt | GIS Inventory — Aerial Photography and Imagery, Ortho-Corrected dataset current as of 1992. One meter black and white digital orthophotographs created in concert with the U.S.G.S..

  19. Lung function decline over 25 years of follow-up among black and white adults in the ARIC study cohort.

    Science.gov (United States)

    Mirabelli, Maria C; Preisser, John S; Loehr, Laura R; Agarwal, Sunil K; Barr, R Graham; Couper, David J; Hankinson, John L; Hyun, Noorie; Folsom, Aaron R; London, Stephanie J

    2016-04-01

    Interpretation of longitudinal information about lung function decline from middle to older age has been limited by loss to follow-up that may be correlated with baseline lung function or the rate of decline. We conducted these analyses to estimate age-related decline in lung function across groups of race, sex, and smoking status while accounting for dropout from the Atherosclerosis Risk in Communities Study. We analyzed data from 13,896 black and white participants, aged 45-64 years at the 1987-1989 baseline clinical examination. Using spirometry data collected at baseline and two follow-up visits, we estimated annual population-averaged mean changes in forced expiratory volume in one second (FEV1) and forced vital capacity (FVC) by race, sex, and smoking status using inverse-probability-weighted independence estimating equations conditioning-on-being-alive. Estimated rates of FEV1 decline estimated using inverse-probability-weighted independence estimating equations conditioning on being alive were higher among white than black participants at age 45 years (e.g., male never smokers: black: -29.5 ml/year; white: -51.9 ml/year), but higher among black than white participants by age 75 (black: -51.2 ml/year; white: -26). Observed differences by race were more pronounced among men than among women. By smoking status, FEV1 declines were larger among current than former or never smokers at age 45 across all categories of race and sex. By age 60, FEV1 decline was larger among former and never than current smokers. Estimated annual declines generated using unweighted generalized estimating equations were smaller for current smokers at younger ages in all four groups of race and sex compared with results from weighted analyses that accounted for attrition. Using methods accounting for dropout from an approximately 25-year health study, estimated rates of lung function decline varied by age, race, sex, and smoking status, with largest declines observed among current

  20. Habitat characteristics of wintering Wood Warbler Phylloscopus ...

    African Journals Online (AJOL)

    Habitat characteristics of wintering Wood Warbler Phylloscopus sibilatrix in the Centre Region of Cameroon: conservation implications. Taku Awa II, Tsi A Evaristus, Robin C Whytock, Tsetagho Guilain, John Mallord ...

  1. Can we explain vagrancy in Europe with the autumn migration phenology of Siberian warbler species in East Russia?

    OpenAIRE

    Bozó László; Heim Wieland; Harnos Andrea; Csörgő Tibor

    2016-01-01

    We examined the autumn migration phenology of nine Siberian breeding songbirds: Thick-billed Warbler (Iduna aedon), Black-browed Reed Warbler (Acrocephalus bistrigiceps), Pallas’s Grasshopper Warbler (Locustella certhiola), Lanceolated Warbler (L. lanceolata), Yellow-browed Warbler (Phylloscopus inornatus), Arctic Warbler (Ph. borealis), Dusky Warbler (Ph. fuscatus), Radde’s Warbler (Ph. schwarzi), Two-barred Warbler (Ph. plumbeitarsus) and compared the migration dynamic characteristics with ...

  2. Survey and clinical application of serum iron, total iron binding capacity, transferrin saturation, and serum ferritin in captive black and white ruffed lemurs (Varecia variegata variegata).

    Science.gov (United States)

    Crawford, Graham C; Andrews, Gordon A; Chavey, Patricia S; Dunker, Freeland H; Garner, Michael M; Sargent, Eva L

    2005-12-01

    Serum samples from 63 clinically normal captive black and white ruffed lemurs (Varecia variegata variegata) were analyzed to survey serum iron, total iron binding capacity, transferrin saturation, and serum ferritin levels. Data analysis showed no differences in these analytes attributable to sex, but significantly higher levels of serum iron, transferrin saturation, and serum ferritin in older animals. The survey data were examined in light of two black and white ruffed lemurs that were treated for iron overload with serial phlebotomies. Prior to therapy, both phlebotomized lemurs had excess hepatic iron deposition, but had serum iron, transferrin saturation, and serum ferritin below the upper limits observed in the survey animals, suggesting that some clinically normal animals included in the survey may have accumulated excess systemic iron. Serial phlebotomy therapy reduced serum iron, transferrin saturation, and serum ferritin in both animals. Three years after the conclusion of therapy in the one remaining case, serum iron and transferrin saturation have risen substantially, whereas serum ferritin has risen slightly. Serum iron, transferrin saturation, and serum ferritin may be useful predictors of systemic iron stores in this species, though the correlation between these parameters and systemic iron stores needs to be determined.

  3. Television food advertising viewed by preschoolers, children and adolescents: contributors to differences in exposure for black and white youth in the United States.

    Science.gov (United States)

    Fleming-Milici, F; Harris, J L

    2018-02-01

    Public health experts raise concerns about adolescents' and black youth's greater exposure to TV advertising for unhealthy foods and beverages compared with children and white youth. Examine how television-viewing patterns and rates of advertising during targeted programming contribute to this greater exposure. Nielsen panel data provided viewing times and amount of food advertising viewed on U.S. television in 2008 and 2012. Researchers compared results by network type (black-, child- and youth-targeted), age group (preschoolers, children and adolescents) and race (black and white youth). Food advertising exposure increased with age for both black and white youth, but black youth viewed approximately 50% or more ads than did white youth of the same age. Higher rates of food advertising on youth-targeted networks explained greater adolescent exposure. However, greater television viewing and higher rates of advertising on youth- and black-targeted networks both contributed to black youth's greater exposure. From 2008 to 2012, increases in food-ads-per-hour increased exposure for all youth. Food advertisers and networks, especially those targeting adolescents and black youth, must do more to reduce advertising that negatively impacts young people's health. Furthermore, reducing commercial-television viewing by black youth may help reduce health disparities affecting their communities. © 2016 World Obesity Federation.

  4. The black and white coatings on Ti-6Al-4V alloy or pure titanium by plasma electrolytic oxidation in concentrated silicate electrolyte

    Science.gov (United States)

    Han, Jun-xiang; Cheng, Yu-lin; Tu, Wen-bin; Zhan, Ting-Yan; Cheng, Ying-liang

    2018-01-01

    Black TiO2 has triggered scientific interest due to its unique properties such as enhanced solar-driven photocatalytic activity. In this paper, plasma electrolytic oxidation (PEO) treatment of Ti-6Al-4V alloy has been carried out in concentrated sodium silicate electrolyte. Silica-based black and white TiO2 coatings respectively have been obtained by controlling the oxidation time. The black coating, which was formed with a short treatment time, shows good corrosion resistance and the black appearance can be attributed to the presence of Ti2+ and Ti3+ in the coating. The lower valence titanium ions are absent in the white coatings and they also contain relatively higher Na content compared to the black coatings. The white coatings have great surface roughnesses and super hydrophilicity. The bonding strengths of the black and white coatings on the Ti-6Al-4V alloy are ∼14.4 and 4.3 MPa, respectively. The vanadium contributes little to the black appearance of the coating on Ti6Al4V alloy, since the same phenomena occur for the PEO of a pure titanium substrate.

  5. Comparative evaluation of the cadaveric and computed tomographic features of the coelomic cavity in the green iguana (Iguana iguana), black and white tegu (Tupinambis merianae) and bearded dragon (Pogona vitticeps).

    Science.gov (United States)

    Banzato, T; Selleri, P; Veladiano, I A; Zotti, A

    2013-12-01

    Contrast-enhanced computed tomographic studies of the coelomic cavity in four green iguanas, four black and white tegus and four bearded dragons were performed using a conventional CT scanner. Anatomical reference cross sections were obtained from four green iguana, four black and white tegu and six bearded dragon cadavers; the specimens were stored in a -20°C freezer for 24 h then sliced into 5-mm intervals. The frozen sections were cleaned with water and photographed on both sides. The individual anatomical structures were identified by means of the available literature; these were labelled first on the anatomical images and then matched to the corresponding computed tomography images. The results provide an atlas of the normal cross-sectional and computed tomographic anatomy of the coelomic cavity in the green iguana, the black and white tegu and the bearded dragon, which is useful in the interpretation of any imaging modality. © 2013 Blackwell Verlag GmbH.

  6. Leading Causes of Death Contributing to Decrease in Life Expectancy Gap Between Black and White Populations: United States, 1999-2013.

    Science.gov (United States)

    Kochanek, Kenneth D; Anderson, Robert N; Arias, Elizabeth

    2015-11-01

    Life expectancy at birth has increased steadily since 1900 to a record 78.8 years in 2013. But differences in life expectancy between the white and black populations still exist, despite a decrease in the life expectancy gap from 5.9 years in 1999 to 3.6 years in 2013. Differences in the change over time in the leading causes of death for the black and white populations have contributed to this decrease in the gap in life expectancy. Between 1999 and 2013, the decrease in the life expectancy gap between the black and white populations was mostly due to greater decreases in mortality from heart disease, cancer, HIV disease, unintentional injuries, and perinatal conditions among the black population. Similarly, the decrease in the gap between black and white male life expectancy was due to greater decreases in death rates for HIV disease, cancer, unintentional injuries, heart disease, and perinatal conditions in black males. For black females, greater decreases in diabetes death rates, combined with decreased rates for heart disease and HIV disease, were the major causes contributing to the decrease in the life expectancy gap with white females. The decrease in the gap in life expectancy between the white and black populations would have been larger than 3.6 years if not for increases in death rates for the black population for aortic aneurysm, Alzheimer’s disease, and maternal conditions. For black males, the causes that showed increases in death rates over white males were hypertension, aortic aneurysm, diabetes, Alzheimer’s disease, and kidney disease, while the causes that showed increases in death rates for black females were Alzheimer’s disease, maternal conditions, and atherosclerosis. This NCHS Data Brief is the second in a series of data briefs that explore the causes of death contributing to differences in life expectancy between detailed ethnic and racial populations in the United States. The first data brief focused on the racial differences in life

  7. Diet and feeding behaviour of the black-and-white ruffed lemur (Varecia variegata variegata) in the Betampona Reserve, eastern Madagascar.

    Science.gov (United States)

    Britt, A

    2000-01-01

    The feeding behaviour and diet of the black-and-white ruffed lemur (Varecia variegata variegata) was investigated in the Betampona Reserve, eastern Madagascar. The highly frugivorous diet of this subspecies was confirmed - feeding on fruits accounting for 92.0% of feeding records. Most feeding at Betampona was observed at 10-25 m above the forest floor amongst flexible, small (0.5-5.0 cm diameter) and oblique/horizontal (0-45 degrees ) supports. The Varecia spent on average 21.7% (+/- 1.5) of their daily activity budget feeding and employ a variety of postures that enable them to harvest fruits in the rain forest canopy. The suspensory postures were the most important in allowing Varecia to compete with other smaller-bodied frugivores. Copyright 2000 S. Karger AG, Basel

  8. Naturally occurring cerebral nematodiasis due to Baylisascaris larval migration in two black-and-white ruffed lemurs (Varecia variegata variegata) and suspected cases in three emus (Dromaius novaehollandiae).

    Science.gov (United States)

    Campbell, G A; Hoover, J P; Russell, W C; Breazile, J E

    1997-06-01

    During September and October 1992, two black-and-white ruffed lemurs (Varecia variegata variegata) were housed in an outdoor wire enclosure at the Tulsa Zoological Park. The following February and April, both lemurs developed head tilt and ataxia, and they were euthanized. Necropsy revealed multifocal malacia of the white matter of the pons, cerebellum, internal capsule, and cerebral and cerebellar peduncles. Nematode larvae consistent with Baylisascaris spp. were observed in the brain of one lemur. A retrospective study revealed three cases of ataxia in emus (Dromaius novaeholloandiae) that were previously housed in the same enclosure. Archival paraffin-embedded tissue from one emu revealed tractlike foci of malacia within the white matter of the cerebellum. Circumstantial evidence, including the observation of numerous raccoons (Procyon lotor) in the vicinity, and the presence of numerous Baylisascaris. procyonis in the intestine of a single trapped raccoon implicate this roundworm as the pathologic agent in the lemurs.

  9. No role for lightness in the perception of black and white? Simultaneous contrast affects perceived skin tone, but not perceived race.

    Science.gov (United States)

    Brooks, Kevin R; Gwinn, O Scott

    2010-01-01

    Faces of individuals with African and European heritage (henceforth referred to as Black and White respectively) feature two major differences: those of skin tone and morphological characteristics. Although considerations of perceived race are important to various psychological subdisciplines, to date the relative influence of morphological versus photometric characteristics has not been investigated. We attempted to influence the perceived racial typicality of a central target face by manipulating perceived skin tone using the well-known lightness contrast illusion. As expected, ratings of skin tone were influenced by surround faces, yet ratings of perceived racial typicality were not, suggesting a dissociation between the two judgments. Surprisingly, skin tone contributes little to perceived race, leaving facial morphology as the dominant cue. These results may shed light on failures to find effects of racial typicality in studies of prejudice where judgments were based on photographs with altered skin tone alone.

  10. Laterality in semi-free-ranging black and white ruffed lemurs (Varecia variegata variegata): head-tilt correlates with hand use during feeding.

    Science.gov (United States)

    Nelson, Eliza L; O'Karma, Jaime M; Ruperti, Felicia S; Novak, Melinda A

    2009-12-01

    Previous studies in human and chimpanzee infants have identified a predictive relationship between early rightward head orientation and later right hand use. Data from lemurs suggest a leftward bias in hand preference, but there are no data on head positioning. The purpose of this study was to examine the relationship between head and hand preferences in the black and white ruffed lemur (Varecia variegata variegata). Ruffed lemurs rotate the head vertically during chewing in a behavior called head-tilting. Frequency of head-tilting and bouts of unimanual hand use were measured during normal feeding in a semi-free-ranging population of lemurs. Subjects were provisioned at feeding platforms twice daily with fresh fruits, vegetables, and other food items. Sampling was spontaneous and all observations were videotaped. No group-level bias was found for head-tilting, but a left hand bias emerged for hand use. A positive relationship was found between direction of head-tilting preference and direction of hand use preference such that left head-tilts increased as left hand use increased. Furthermore, left head-tilts increased as the degree of hand preference lateralization increased. When the hand used to bring food to the mouth just before head-tilting was examined, there was a strong bias for the left hand to precede left head-tilts. For right head-tilts, however, lemurs were equally likely to use either hand before head-tilting. Overall a strong relationship was found between the left hand and left head-tilting in black and white ruffed lemurs, suggesting a common link between these behaviors. However, the direction of bias was different from that seen in human and chimpanzee studies. Additional studies on patterns of laterality would be informative for understanding how laterality has changed across the primate order and the adaptive significance of laterality in primates.

  11. Childhood risk factors associated with adolescent gun carrying among Black and White males: An examination of self-protection, social influence, and antisocial propensity explanations.

    Science.gov (United States)

    Beardslee, Jordan; Docherty, Meagan; Mulvey, Edward; Schubert, Carol; Pardini, Dustin

    2018-04-01

    Adolescent gun violence is a serious public health issue that disproportionately affects young Black males. Although it has been postulated that differential exposure to childhood risk factors might account for racial differences in adolescent gun carrying, no longitudinal studies have directly examined this issue. We examined whether childhood risk factors indexing neighborhood crime, peer delinquency, and conduct problems predicted the initiation of adolescent gun carrying among a community sample of Black and White boys. Analyses then examined whether racial differences in risk factors accounted for racial differences in gun carrying. Data came from a sample of 485 Black and White boys who were repeatedly assessed from 2nd grade until age 18. Multi-informant data collected across the first 3 years of the study were used to assess neighborhood crime, peer delinquency, and conduct problems. Illegal gun carrying was assessed annually from 5th grade through age 18. Growth curve analyses indicated that children with higher initial levels of conduct problems and delinquent peer involvement, as well as those who increased in conduct problems across childhood, were more likely to carry a gun prior to age 18. Black boys were also more likely to carry guns than Whites. Racial differences were greatly reduced, but not eliminated, after controlling for initial levels of conduct problems and delinquent peer involvement. Findings suggest that early prevention programs designed to reduce adolescent gun violence (including racial disparities in gun violence) should target boys with severe conduct problems and those who affiliate with delinquent peers during elementary school. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

  12. Common standards in facial esthetics: craniofacial analysis of most attractive black and white subjects according to People magazine during previous 10 years.

    Science.gov (United States)

    Iglesias-Linares, Alejandro; Yáñez-Vico, Rosa-María; Moreno-Manteca, Blanca; Moreno-Fernández, Ana María; Mendoza-Mendoza, Asunción; Solano-Reina, Enrique

    2011-06-01

    The aim of the present case-control study was to determine--using the 10 most recent annual listings of the most beautiful black and white people--whether any common, measurable esthetic parameter could be extracted from both groups. A total of 80 women (40 white and 40 black), who had been included in the list of People magazine's 100 most beautiful people during the previous 10 years, were selected. Lateral photographs of all 80 subjects were obtained from Internet databases, oriented, and sized. A modified photogrammetric analysis was performed on the lateral view of each subject to obtain the angle and proportion measurements. Differences between the 2 groups were compared with 95% significance using the Student t test for independent samples. Facial similarities in the 2 ethnic groups were observed for the angle of the inferior facial third, labiomental angle, angle of facial convexity, and cervicomental angle. These results point to a similar conformation of the lower part of the face in relation to the neck that was shared by both groups of beautiful women. Additionally, both groups showed similar results for the lower lip projection. Likewise, similar proportional measurements were found for the upper lip proportion, notwithstanding differences in protrusion. Modern society is changing the classic concept of facial beauty because of globalization and the prevalence of multiethnic communities in the developed world. Independently of ethnic origin, beautiful women tend to have similar facial features that are a mixture of both black and white features. Copyright © 2011 American Association of Oral and Maxillofacial Surgeons. Published by Elsevier Inc. All rights reserved.

  13. Jim Crow and premature mortality among the US Black and White population, 1960-2009: an age-period-cohort analysis.

    Science.gov (United States)

    Krieger, Nancy; Chen, Jarvis T; Coull, Brent A; Beckfield, Jason; Kiang, Mathew V; Waterman, Pamela D

    2014-07-01

    Scant research has analyzed the health impact of abolition of Jim Crow (ie, legal racial discrimination overturned by the US 1964 Civil Rights Act). We used hierarchical age-period-cohort models to analyze US national black and white premature mortality rates (death before 65 years of age) in 1960-2009. Within a context of declining US black and white premature mortality rates and a persistent 2-fold excess black risk of premature mortality in both the Jim Crow and non-Jim Crow states, analyses including random period, cohort, state, and county effects and fixed county income effects found that, within the black population, the largest Jim Crow-by-period interaction occurred in 1960-1964 (mortality rate ratio [MRR] = 1.15 [95% confidence interval = 1.09-1.22), yielding the largest overall period-specific Jim Crow effect MRR of 1.27, with no such interactions subsequently observed. Furthermore, the most elevated Jim Crow-by-cohort effects occurred for birth cohorts from 1901 through 1945 (MRR range = 1.05-1.11), translating to the largest overall cohort-specific Jim Crow effect MRRs for the 1921-1945 birth cohorts (MRR ~ 1.2), with no such interactions subsequently observed. No such interactions between Jim Crow and either period or cohort occurred among the white population. Together, the study results offer compelling evidence of the enduring impact of both Jim Crow and its abolition on premature mortality among the US black population, although insufficient to eliminate the persistent 2-fold black excess risk evident in both the Jim Crow and non-Jim Crow states from 1960 to 2009.

  14. Measures of economic advantage associated with HPV-positive head and neck cancers among non-Hispanic black and white males identified through the National Cancer Database.

    Science.gov (United States)

    Peterson, Caryn E; Khosla, Shaveta; Jefferson, Gina D; Davis, Faith G; Fitzgibbon, Marian L; Freels, Sally; Johnson, Timothy P; Hoskins, Kent; Joslin, Charlotte E

    2017-06-01

    National trends show dramatic increases in the incidence of HPV-related head and neck squamous cell carcinomas (HNSCCs) among black and white males. Using cases identified through the National Cancer Data Base, we assessed factors associated with HPV 16- or 16/18 positive HNSCCs among non-Hispanic black and white males diagnosed in the U.S. between 2009 and 2013. This sample included 21,524 HNSCCs with known HPV status. Adjusted relative risks (RRs) and 95% confidence intervals (CIs) were estimated using log-binomial regression. Compared to those with HPV-negative tumors, male patients diagnosed with HPV-positive HNSCCs were non-Hispanic white, younger at diagnosis, lived in zip-code areas with higher median household income and higher educational attainment, had private health insurance and no reported comorbidities at diagnosis. Although the risk of HPV-positive HNSCCs increased with measures of higher area-level socioeconomic status, the effect was stronger for non-Hispanic black males (RR Adjusted =1.76, 95% CI 1.49-2.09) than for whites (RR Adjusted =1.12, 95% CI 1.08-1.16). The peak age for diagnosis of HPV-positive HNSCCs occurred in those diagnosed at 45-49 years (RR Adjusted =1.57, 95% CI 1.42-1.73). Oropharyngeal tumors were strongly associated with HPV-positivity (RR Adjusted =4.32, 95% CI 4.03-4.63). In the analysis restricted to oropharyngeal anatomic sites, similar patterns persisted. In our analysis, measures of economic advantage were associated with an increased risk of HPV-positive HNSCCs. In order to develop effective interventions, greater understanding of the risk factors for HPV-positive HNSCCs is needed among both high-risk males and their healthcare providers. Copyright © 2017 Elsevier Ltd. All rights reserved.

  15. Does education matter? Examining racial differences in the association between education and STI diagnosis among black and white young adult females in the U.S.

    Science.gov (United States)

    Annang, Lucy; Walsemann, Katrina M; Maitra, Debeshi; Kerr, Jelani C

    2010-01-01

    Education has long been considered a protective factor against sexual risk behaviors and sexually transmitted infections (STIs) among adolescents; however, few have explored this association and determined differences across racial/ethnic groups of young adult females on a national scale. The purpose of this study was to (1) describe the association between education and STI diagnosis among a national sample of black and white young adult females and (2) examine racial differences in this association. We used data from the National Longitudinal Study of Adolescent Health (Add Health) to assess the association between education and chlamydia, gonorrhea, and/or trichomoniasis (self-reported and assay-diagnosed) in 2001-2002 using logistic regression analysis. After adjustment for risk behaviors, education was inversely associated with any assay-diagnosed STI, but this association was nonsignificant among black women for self-reported STI. Additionally, black females enrolled in, or who graduated from, college had significantly higher predicted probabilities of having an STI (12.4% self-reported; 13.4% assay-diagnosed) compared with white females who had less than a high school diploma (6.4% self-reported; 2.3% assay-diagnosed). Educational status was not uniformly protective against STIs for black and white females in this sample. Particularly for young black women, other factors may play a more prominent role in determining STI risk. Social determinants, such as education, should be viewed as important factors associated with STI prevalence, but their differential impact on various racial/ethnic groups should also be considered when addressing the disproportionate rates of STIs in the U.S.

  16. Quantification of systemic renin-angiotensin system peptides of hypertensive black and white African men established from the RAS-Fingerprint®

    Directory of Open Access Journals (Sweden)

    JM van Rooyen

    2016-10-01

    Full Text Available Objective: The objective of this study was to make use of a quantitative and qualitative approach comparing the systemic renin-angiotensin system (RAS of hypertensive black and white African men by using RAS equilibrium analysis. Materials and methods: This sub-study involved 23 black (n = 15 and white (n = 8 hypertensive men aged 39.5–41 years, living in the North West Province of South Africa. The RAS-Fingerprinting was determined with LC-MS/MS quantification of angiotensin peptides. Blood pressure and other variables were determined with known methods. Results: The main finding of this study was the significant lower Ang I (<5.0 and 45.1 pg/ml; p = 0.005 and Ang II (15.6 and 123.9 pg/ml; p ⩽ 0.001 encountered in the hypertensive black African men compared to their white counterparts. Levels of Ang 1-5 (downstream metabolite of Ang 1-7 (1.8 and 3.0 pg/ml, were detected in black and white hypertensive men, respectively. Conclusions: The observed differences between circulating RAS components, which are reflected via equilibrium angiotensin levels, point to a distinctive molecular regulation of the RAAS in the two study cohorts. The increased peripheral resistance observed in hypertensive black individuals might take over a dominant role in control of blood pressure in this study population. A novel highly sensitive LC-MS/MS method resolved the issue of peptide recovery variations during sample preparation by using internal standards for each individual angiotensin metabolite.

  17. Stopover ecology of migratory Sedge Warblers ( Acrocephalus ...

    African Journals Online (AJOL)

    migration might also be involved. Sedge Warblers gain mass in Eilat, both in spring and in autumn. Birds in poor initial condition and those stopping over for a longer period gained more body mass faster. In spring, but not in autumn, the progress of the season was another important factor: late birds gained more body mass.

  18. Researches on Nutritional Behaviour in Romanian Black and White Primiparous Cows. Interruptions Number and their Duration in the Ration Consumption Time

    Directory of Open Access Journals (Sweden)

    Silvia Erina

    2012-10-01

    Full Text Available The study was carried out on 9 Romanian Black and White primiparous cows. The aim of this study was todetermine some aspect of nutritional behaviour of the cows. During the experiments, the following behaviour aspectswere determined: interruption number and their duration in the feed consumption time. Results showed that theadministration order of forages had an influence on the interruptions number, which was 0.74 less for hay in fibroussucculentorder (O1. For silage, the interruption number was 0.42 higher in fibrous-succulent order (O1. Betweenportion 1 (P1 and portion 3 (P3, the significant difference (p<0.05 was for interruptions duration, duringconsumption silage, in favour portion P1. Distinct significant differences (p<0.01 was observed for the interruptionnumber during consumption silage (0.95 sec. higher in P1 than in P3, for interruption duration (5.96 sec. higher inP1 than in P3. Between P2 and P3, significant difference (p<0.05 was observed for interruptions number duringconsumption silage and for average interruptions duration during consumption beet in favour to portion P2.Regarding the number of feedings per portion, always the differences were higher in the second feeding F1 than inthe first feeding F2.

  19. Comparative Transcriptome Analysis of Mink (Neovison vison) Skin Reveals the Key Genes Involved in the Melanogenesis of Black and White Coat Colour.

    Science.gov (United States)

    Song, Xingchao; Xu, Chao; Liu, Zongyue; Yue, Zhigang; Liu, Linling; Yang, Tongao; Cong, Bo; Yang, Fuhe

    2017-09-29

    Farmed mink (Neovison vison) is one of the most important fur-bearing species worldwide, and coat colour is a crucial qualitative characteristic that contributes to the economic value of the fur. To identify additional genes that may play important roles in coat colour regulation, Illumina/Solexa high-throughput sequencing technology was used to catalogue the global gene expression profiles in mink skin with two different coat colours (black and white). RNA-seq analysis indicated that a total of 12,557 genes were differentially expressed in black versus white minks, with 3,530 genes up-regulated and 9,027 genes down-regulated in black minks. Significant differences were not observed in the expression of MC1R and TYR between the two different coat colours, and the expression of ASIP was not detected in the mink skin of either coat colour. The expression levels of KITLG, LEF1, DCT, TYRP1, PMEL, Myo5a, Rab27a and SLC7A11 were validated by qRT-PCR, and the results were consistent with RNA-seq analysis. This study provides several candidate genes that may be associated with the development of two coat colours in mink skin. These results will expand our understanding of the complex molecular mechanisms underlying skin physiology and melanogenesis in mink and will provide a foundation for future studies.

  20. Determination of Ochratoxin A in Black and White Pepper, Nutmeg, Spice Mix, Cocoa, and Drinking Chocolate by High-Performance Liquid Chromatography Coupled with Fluorescence Detection: Collaborative Study.

    Science.gov (United States)

    Cubero-Leon, Elena; Bouten, Katrien; Senyuva, Hamide; Stroka, Joerg

    2017-09-01

    A method validation study for the determination of ochratoxin A in black and white pepper (Piper spp.), nutmeg (Myristica fragrans), spice mix (blend of ginger, turmeric, pepper, nutmeg, and chili), cocoa powder, and drinking chocolate was conducted according to the International Harmonized Protocol of the International Union of Pure and Applied Chemistry. The method is based on the extraction of samples with aqueous methanol, followed by a cleanup of the extract with an immunoaffinity column. The determination is carried out by reversed-phase LC coupled with a fluorescence detector. The study involved 25 participants representing a cross-section of research, private, and official control laboratories from 12 European Union (EU) Member States, together with Turkey and Macedonia. Mean recoveries ranged from 71 to 85% for spices and from 85 to 88% for cocoa and drinking chocolate. The RSDr values ranged from 5.6 to 16.7% for spices and from 4.5 to 18.7% for cocoa and drinking chocolate. The RSDR values ranged from 9.5 to 22.6% for spices and from 13.7 to 30.7% for cocoa and drinking chocolate. The resulting Horwitz ratios ranged from 0.4 to 1 for spices and from 0.6 to 1.4 for cocoa and drinking chocolate according to the Horwitz function modified by Thompson. The method showed acceptable within-laboratory and between-laboratory precision for each matrix, and it conforms to requirements set by current EU legislation.

  1. Disparities in herpes simplex virus type 2 infection between black and white men who have sex with men in Atlanta, GA.

    Science.gov (United States)

    Okafor, Netochukwu; Rosenberg, Eli S; Luisi, Nicole; Sanchez, Travis; del Rio, Carlos; Sullivan, Patrick S; Kelley, Colleen F

    2015-09-01

    HIV disproportionately affects black men who have sex with men, and herpes simplex virus type 2 is known to increase acquisition of HIV. However, data on racial disparities in herpes simplex virus type 2 prevalence and risk factors are limited among men who have sex with men in the United States. InvolveMENt was a cohort study of black and white HIV-negative men who have sex with men in Atlanta, GA. Univariate and multivariate cross-sectional associations with herpes simplex virus type 2 seroprevalence were assessed among 455 HIV-negative men who have sex with men for demographic, behavioural and social determinant risk factors using logistic regression. Seroprevalence of herpes simplex virus type 2 was 23% (48/211) for black and 16% (38/244) for white men who have sex with men (p = 0.05). Education, poverty, drug/alcohol use, incarceration, circumcision, unprotected anal intercourse, and condom use were not associated with herpes simplex virus type 2. In multivariate analyses, black race for those ≤25 years, but not >25 years, and number of sexual partners were significantly associated. Young black men who have sex with men are disproportionately affected by herpes simplex virus type 2, which may contribute to disparities in HIV acquisition. An extensive assessment of risk factors did not explain this disparity in herpes simplex virus type 2 infection suggesting differences in susceptibility or partner characteristics. © The Author(s) 2014.

  2. Positive influence of traditional culture and socioeconomic activity on conservation: a case study from the black-and-white snub-nosed monkey (Rhinopithecus bieti) in Tibet.

    Science.gov (United States)

    Xiang, Zuo-Fu; Huo, Sheng; Xiao, Wen; Cui, Liang-Wei

    2010-12-01

    Found in the Trans-Himalayas of north-west Yunnan and south-east Tibet, the black-and-white snub-nosed monkey (Rhinopithecus bieti) is one of the world's most endangered primates. A recent survey indicates that only 15 groups with 2500 individuals remain in the wild. However, the Tibetan Xiaochangdu group may be the only equilibrium group in the field since the last investigation in 1988. To evaluate the effects of traditional culture and socioeconomic activity on biodiversity conservation of R. bieti, we conducted a case study in the Honglaxueshan National Nature Reserve in southeast Tibet from June 2003 to May 2005. Interviews, direct observations, and analysis of socioeconomic data indicated major advantages to the conservation of R. bieti, which included that: 1) traditional culture mainly depended on raising livestock and collecting non-timber products rather than forest planting of Tibetan highland barley; 2) religious beliefs, against to kill any wildlife living on the sacred mountain, were mainly influenced by Tibetan Buddhism; and 3) bigger household numbers were induced by the polyandrous marriage system, which resulted in lower per capita resource consumption than smaller ones.

  3. Food Shopping Venues, Neighborhood Food Environment, and Body Mass Index Among Guyanese, Black, and White Adults in an Urban Community in the US.

    Science.gov (United States)

    Hosler, Akiko S; Michaels, Isaac H; Buckenmeyer, Erin M

    2016-06-01

    To investigate relationships among food shopping venues, food environment, and body mass index (BMI). Cross-sectional survey data and directly assessed food environment data were linked at the neighborhood level. Schenectady, NY. A sample of Guyanese, black, and white adults (n = 226, 485, and 908, respectively). BMI. Linear regression models were constructed with 10 food shopping venues and neighborhood food environment as explanatory variables, controlling for sociodemographics, dietary behavior, physical activity, and perception of healthy food access. On average, respondents used 3.5 different food shopping venues. Supermarkets and ethnic markets were associated with a lower BMI in Guyanese adults. Among black adults, farmers' markets were associated with a lower BMI, whereas supermarkets, wholesale clubs, and food pantries were associated with a higher BMI. Among white adults, food coops and supermarkets were associated with a lower BMI and wholesale clubs were associated with a higher BMI. Neighborhoods with less a favorable food environment (longer travel distance to a supermarket) were associated with a lower BMI in Guyanese adults. Both primary (ie, supermarkets) and secondary food shopping venues could be independent determinants of BMI. The observed variations by race and ethnicity provided insights into a culturally tailored approach to address obesity. Copyright © 2016 Society for Nutrition Education and Behavior. Published by Elsevier Inc. All rights reserved.

  4. Circulating 25-hydroxyvitamin D concentrations are correlated with cardiometabolic risk among American black and white adolescents living in a year-round sunny climate.

    Science.gov (United States)

    Parikh, Samip; Guo, De-Huang; Pollock, Norman K; Petty, Karen; Bhagatwala, Jigar; Gutin, Bernard; Houk, Chris; Zhu, Haidong; Dong, Yanbin

    2012-05-01

    Low vitamin D status is common among healthy black and white adolescents residing at southern U.S. latitudes with a year-round sunny climate. Thus we aimed to study the relationships between circulating 25-hydroxyvitamin D [25(OH)D] and cardiometabolic risk factors in this population. 25(OH)D concentrations were measured with liquid chromatography tandem mass spectroscopy in 701 girls and boys (14-18 years old, 54% blacks, 49% females). Cardiometabolic risk was indexed by adipokines, inflammatory markers, fasting glucose, homeostatic model assessment-insulin resistance (HOMA-IR), lipid profile, and blood pressure (BP). Controlling for age, sex, race, sexual maturation, season, physical activity, and percent body fat, 25(OH)D concentrations were significantly correlated with adiponectin (r = 0.06, P = 0.05), leptin (r = -0.32, P risk factors, independent of adiposity. Clinical trials addressing the effects of vitamin D supplementation on cardiometabolic risk are warranted in adolescents irrespective of their geographical regions.

  5. Erratum to: Interpersonal discrimination and health-related quality of life among black and white men and women in the United States.

    Science.gov (United States)

    Sellers, Sherrill L; Cherepanov, Dasha; Hanmer, Janel; Fryback, Dennis G; Palta, Mari

    2013-08-01

    We assessed associations between discrimination and health-related quality of life among black and white men and women in the United States. We examined data from the National Health Measurement Study, a nationally representative sample of 3,648 adults aged 35-89 in the non-institutionalized US population. These data include self-reported lifetime and everyday discrimination as well as several health utility indexes (EQ-5D, HUI3, and SF-6D). Multiple regression was used to compute mean health utility scores adjusted for age, income, education, and chronic diseases for each race-by-gender subgroup. Black men and women reported more discrimination than white men and women. Health utility tended to be worse as reported discrimination increased. With a few exceptions, differences between mean health utility scores in the lowest and highest discrimination groups exceeded the 0.03 difference generally considered to be a clinically significant difference. Persons who experienced discrimination tended to score lower on health utility measures. The study also revealed a complex relationship between experiences of discrimination and race and gender. Because of these differential social and demographic relationships caution is urged when interpreting self-rated health measures in research, clinical, and policy settings.

  6. A partly albino Wilson's Warbler (Wilsonia pusilla)

    Science.gov (United States)

    Wang Yong; Deborah M. Finch

    1997-01-01

    On 20 September 1995 at 11:15 MST, during routine mist-netting for a study investigating the use of the middle Rio Grande riparian habitat by migratory land birds at Rio Grande Nature Center, Bernalillo County, New Mexico, we were surprised to discover a light yellowish warbler in one of the nets. After careful examination and comparison, the bird was identified as a...

  7. Islands in a desert : breeding ecology of the African Reed Warbler Acrocephalus baeticatus in Namibia

    NARCIS (Netherlands)

    Eising, CM; Komdeur, J; Buys, J; Reemer, M; Richardson, DS; Richardson, David S.

    The continental African Reed Warbler Acrocephalus baeticatus, like its relative the Seychelles Warbler Acrocephalus sechellensis, breeds in isolated patches. We studied the mating system of the African Reed Warbler to see whether this species, like the Seychelles Warbler, shows co-operative

  8. A test of 3 models of Kirtland's warbler habitat suitability

    Science.gov (United States)

    Mark D. Nelson; Richard R. Buech

    1996-01-01

    We tested 3 models of Kirtland's warbler (Dendroica kirtlandii) habitat suitability during a period when we believe there was a surplus of good quality breeding habitat. A jack pine canopy-cover model was superior to 2 jack pine stem-density models in predicting Kirtland's warbler habitat use and non-use. Estimated density of birds in high...

  9. Density-dependent mass gain by Wilson's Warblers during stopover

    Science.gov (United States)

    Jeffrey F. Kelly; Linda S. DeLay; Deborah M. Finch

    2002-01-01

    The need restore energetic reserves at stopover sites constrains avian migration ecology. To describe that constraint, we examined relationships among mass gained by Wilson's Warblers (Wilsonia pusilla) during stopover, abundance of Wilson's Warblers (i.e. capture rate), and arthropod abundance during autumn migration. We found that amount...

  10. Relating Kirtland's warbler population to changing landscape composition and structure

    Science.gov (United States)

    John R. Probst; Jerry Weinrich

    1993-01-01

    The population of male Kirtland's warbler (Dendroica kirtlandil) in the breeding season has averaged 206 from 1971 to 1987. The Kirtland's warbler occupies dense jack pine (Pinus banksiana) barrens from 5 to 23 years old and from 1.4 to 5.0 m high, formerly of wildfire origin. In 1984, 73% of the males censused were found in habitat naturally regenerated from...

  11. Incidence of nest material kleptoparasitism invlovling cerulean warblers

    Science.gov (United States)

    Kelly C. Jones; Kirk L. Roth; Kamal Islam; Paul B. Hamel; Carl G. III Smith

    2007-01-01

    document 21 observations of interspecific stealing of nesting material involving Cerulean Warblers (Dendroica cerulea), Red-eyed Vireos (Vireo olivaceus/i>), Blue-gray Gnatcatchers (Polioptila caerulea/i>), Northern Parulas (Parula americana/i>), Black-throated Green Warblers (D. virens), American Redstarts (

  12. Direitos sexuais, direitos reprodutivos: concepções de mulheres negras e brancas sobre liberdade Sexual and reproductive rights: the conceptions of black and white women regarding freedom

    Directory of Open Access Journals (Sweden)

    Raquel Souzas

    2007-08-01

    Full Text Available A saúde reprodutiva relaciona-se ao usufruto da liberdade intrínseca aos direitos sexuais e reprodutivos. A questão central, neste artigo, é como a noção de liberdade se articula à condição social, de gênero, raça/etnia, com o intuito de investigar diferenças de gênero e de raça nas questões reprodutivas de mulheres negras e brancas, em relação à concepção de liberdade. A pesquisa é de natureza qualitativa e aborda questões reprodutivas de mulheres, a partir de um recorte de gênero e raça. Foram entrevistadas 36 mulheres, autoclassificadas brancas e negras (pretas e pardas, em união conjugal há, pelo menos, um ano. Os discursos foram analisados articulando-se raça/etnia e diferentes níveis de escolaridade. No conjunto, observa-se que as condições de vida e saúde reprodutiva de mulheres negras e brancas diferenciam-se em razão das condições socioeconômicas e culturais. Comparativamente, os discursos dos dois grupos podem ser interpretados em dois níveis característicos, da vida privada e do espaço público: enquanto mulheres brancas focam a defasagem das mulheres, no exercício eqüitativo da liberdade em relação aos homens, mas destacam conquistas no mundo do trabalho, mulheres negras pensam a liberdade mais circunscrita à possibilidade de vivência democrática da conjugalidade. As diferenças de discurso em relação à liberdade podem estar relacionadas tanto à questão do racismo no Brasil, historicamente vivenciado por mulheres negras no cotidiano, como às questões especificamente culturais dos dois grupos estudados.Reproductive health is related to the enjoyment of freedom that is intrinsic to sexual and reproductive rights. The core issue, in this article, is how the notion of freedom articulates itself to the social condition of gender, race and ethnicity. To investigate gender and race differences in reproductive issues of black and white women regarding the conception of freedom. The research

  13. ESTIMATED COMPOSITION OF DIETS FED TO CAPTIVE BLACK-AND-WHITE RUFFED LEMURS (VARECIA VARIEGATA) AT 33 U.S. ZOOLOGICAL INSTITUTIONS.

    Science.gov (United States)

    Donadeo, Brett C; Kerr, Katherine R; Morris, Cheryl L; Swanson, Kelly S

    2016-03-01

    Data on captive diets for black-and-white ruffed lemurs (Varecia variegata) are limited. Information on food items used, inclusion amounts, and the chemical composition of diets is needed to improve the management of nutrition-related health problems seen in captive lemurs (e.g., obesity) that have not been reported in their wild counterparts. To determine the ingredient and nutrient composition of diets for captive V. variegata, U.S. zoological institutions were surveyed. Chemical composition of reported diets was estimated using Nutritionist Pro™ (Axxya Systems, Stafford, Texas 77477, USA), and these values were compared numerically to wild lemur diets from the literature. Institutions included from six to greater than 30 different ingredients in their diets, including fruits (0.0-84.1%), vegetables (7.5-70.0%), greens (1.0-28.5%), and commercially available feeds (1.5-68.6%). Nutrient concentrations of captive diets ranged as follows: dry matter (DM), 14.5-67.6%; organic matter, 93.1-97.2% DM basis (DMB); crude protein, 7.9-23.9% DMB; fat, 2.0-6.5% DMB; total dietary fiber, 10.1-28.1% DMB; and N-free extract, 38.9-74.4% DMB. Captive diets had lower fat and total dietary fiber and higher protein and N-free extract compared to wild fruit items from Madagascar. Reducing the amount of fruit in captive diets for V. variegata would be expected to decrease digestible carbohydrate content and increase fiber content of these diets, which has implications for the prevalence of obesity in captive animals.

  14. Attractiveness of black and white modified Shannon traps to phlebotomine sandflies (Diptera, Psychodidae) in the Brazilian Amazon Basin, an area of intense transmission of American cutaneous leishmaniasis.

    Science.gov (United States)

    Brilhante, Andreia Fernandes; de Ávila, Márcia Moreira; de Souza, Jailson Ferreira; Medeiros-Sousa, Antônio Ralph; Sábio, Priscila Bassan; de Paula, Marcia Bicudo; Godoy, Rodrigo Espindola; Melchior, Leonardo Augusto Kohara; Nunes, Vânia Lúcia Brandão; de Oliveira Cardoso, Cristiane; Galati, Eunice Aparecida Bianchi

    2017-01-01

    In the Amazon region the phlebotomine fauna is considered one of the most diverse in the world. The use of Shannon traps may provide information on the anthropophily of the species and improve the traps' performance in terms of diversity and quantity of insects collected when white and black colored traps are used together. This study sought to verify the attractiveness of the traps to the phlebotomine species of the Brazilian Amazon basin using Shannon traps under these conditions. The insects were collected using two Shannon traps installed side by side, one white and the other black, in a primary forest area of the municipality of Xapuri, Acre, Brazil. Samples were collected once a month during the period August 2013 to July 2015. A sample of females was dissected to test for natural infection by flagellates. A total of 6,309 (864 males and 5,445 females) specimens (36 species) were collected. Psychodopygus carrerai carrerai (42%), Nyssomyia shawi (36%), and Psychodopygus davisi (13%), together represented 90% of the insects collected. Nyssomyia shawi and Psychodopygus davisi were more attracted by the white color. Specimens of Nyssomyia shawi, Nyssomyia whitmani, and Psychodopygus hirsutus hirsutus were found naturally infected by flagellates in the mid and hindgut. This is the first study in Acre state using and comparing both black and white Shannon traps, demonstrating the richness, diversity, and anthropophilic behavior of the phlebotomine species and identifying proven and putative vectors of the etiological agents of leishmaniasis. © A.F. Brilhante et al., published by EDP Sciences, 2017.

  15. Influence of point-of-sale tobacco displays and plain black and white cigarette packaging and advertisements on adults: Evidence from a virtual store experimental study.

    Science.gov (United States)

    Nonnemaker, James; Kim, Annice; Shafer, Paul; Loomis, Brett; Hill, Edward; Holloway, John; Farrelly, Matthew

    2016-05-01

    We examined the potential impact of banning tobacco displays and mandating plain packaging and cigarette advertisements at the point of sale (POS) on adult outcomes. A virtual convenience store was created with scenarios in which the tobacco product display was either fully visible (status quo) or enclosed behind a cabinet (display ban), and cigarette packs and advertisements were either in full color (status quo) or black and white, text only (plain). A national convenience sample of 1313 adult current smokers and recent quitters was randomized to 1 of 4 conditions and given a shopping task to complete in the virtual store. Main outcomes were participants' self-reported urge to smoke and tobacco purchase attempts in the virtual store. Compared with recent quitters in the status quo conditions, recent quitters in the display ban condition had lower urges to smoke (β=-4.82, 95% CI=-8.16--1.49, p<0.01). Compared with current smokers in the status quo conditions, smokers in the display ban conditions were less likely to attempt to purchase cigarettes in the virtual store (OR=0.05, 95% CI=0.03-0.08, P<0.01). Smokers exposed to plain packs and ads were significantly less likely to attempt to purchase cigarettes (OR=0.31, 95% CI=0.20-0.47, P<0.01) than those exposed to color packs and ads. Policies that ban the display of tobacco products or require plain packaging and advertising at the POS may help reduce adult smoking. Copyright © 2016 Elsevier Ltd. All rights reserved.

  16. Racial discrimination & cardiovascular disease risk: my body my story study of 1005 US-born black and white community health center participants (US).

    Science.gov (United States)

    Krieger, Nancy; Waterman, Pamela D; Kosheleva, Anna; Chen, Jarvis T; Smith, Kevin W; Carney, Dana R; Bennett, Gary G; Williams, David R; Thornhill, Gisele; Freeman, Elmer R

    2013-01-01

    To date, limited and inconsistent evidence exists regarding racial discrimination and risk of cardiovascular disease (CVD). Cross-sectional observational study of 1005 US-born non-Hispanic black (n = 504) and white (n = 501) participants age 35-64 randomly selected from community health centers in Boston, MA (2008-2010; 82.4% response rate), using 3 racial discrimination measures: explicit self-report; implicit association test (IAT, a time reaction test for self and group as target vs. perpetrator of discrimination); and structural (Jim Crow status of state of birth, i.e. legal racial discrimination prior 1964). Black and white participants both had adverse cardiovascular and socioeconomic profiles, with black participants most highly exposed to racial discrimination. Positive crude associations among black participants occurred for Jim Crow birthplace and hypertension (odds ratio (OR) 1.92, 95% confidence interval (CI) 1.28, 2.89) and for explicit self-report and the Framingham 10 year CVD risk score (beta = 0.04; 95% CI 0.01, 0.07); among white participants, only negative crude associations existed (for IAT for self, for lower systolic blood pressure (SBP; beta = -4.86; 95% CI -9.08, -0.64) and lower Framingham CVD score (beta = -0.36, 95% CI -0.63, -0.08)). All of these associations were attenuated and all but the white IAT-Framingham risk score association were rendered null in analyses that controlled for lifetime socioeconomic position and additional covariates. Controlling for racial discrimination, socioeconomic position, and other covariates did not attenuate the crude black excess risk for SBP and hypertension and left unaffected the null excess risk for the Framingham CVD score. Despite worse exposures among the black participants, racial discrimination and socioeconomic position were not associated, in multivariable analyses, with risk of CVD. We interpret results in relation to constrained variability of exposures and outcomes and discuss implications

  17. Timing of menarche related to carotid artery intima-media thickness in black and white young adult women: the Bogalusa Heart Study.

    Science.gov (United States)

    Bhuiyan, Azad R; Srinivasan, Sathanur R; Chen, Wei; Fernandez, Camilo; Xu, Ji-Hua; Berenson, Gerald S

    2015-06-01

    The early onset of menarche is related to the adulthood risk of cardiovascular (CV) disease. This study examines the relation of early onset of menarche to carotid artery intima-media thickness (IMT), which is a surrogate marker of CV disease, among asymptomatic young adult women in a black-white community. A cohort of 461 women (31% black, 69% white) aged 24 to 43 years (mean of 35.6 years) were participants in the Bogalusa Heart Study. The age at menarche was retrospectively collected. In addition to CV risk factor variable measurements B-mode ultrasound images of the far walls of carotid artery segments were obtained. The multivariate linear regression model along with mediating effect by Sobel test was applied to analyze menarcheal age effect on carotid artery IMT, adjusting for covariates. Waist to height ratio was significantly greater (P = .01) in early menarcheal age (women. Homeostasis model assessment of insulin resistance (HOMA-IR) was significantly greater (P = .01) in early menarcheal age (women and also similar direction in black women. Internal carotid artery IMT was the same in early menarcheal age (women but higher (P = .02) in black women. Given as previously mentioned these different associations, the mediation analysis by race was performed. The effect of early menarcheal age (women after adjusting for parental education and age. The mediating effect of waist to height ratio (Sobel test = -2.26 and P = .02) and HOMA-IR (Sobel test = -1.85 and P = .06) on internal carotid artery IMT was noted in white women. The direct effect of early menarcheal age (women. The observed deleterious effect of early onset of menarche on carotid artery IMT in asymptomatic black and white younger adult women has biological, social, and public health implications. Copyright © 2015 Elsevier Inc. All rights reserved.

  18. Anginal symptoms, coronary artery disease, and adverse outcomes in Black and White women: the NHLBI-sponsored Women's Ischemia Syndrome Evaluation (WISE) study.

    Science.gov (United States)

    Eastwood, Jo-Ann; Johnson, B Delia; Rutledge, Thomas; Bittner, Vera; Whittaker, Kerry S; Krantz, David S; Cornell, Carol E; Eteiba, Wafia; Handberg, Eileen; Vido, Diane; Bairey Merz, C Noel

    2013-09-01

    Black women are less likely to be evaluated and treated for anginal symptoms, despite a higher premature cardiac mortality rate compared to white women. Our objective was to compare angina symptoms in black versus white women regarding (1) angina symptoms characterization; (2) relationship with obstructive coronary artery disease (CAD); and (3) relationship with subsequent mortality. A cohort of 466 women (69 black and 397 white) undergoing coronary angiography for suspected ischemia and without prior history of CAD completed symptom checklists. Four symptom clusters (CHEST, UPPER, STOMACH, and TYPICAL TRIGGERS) were derived by factor analysis. All angiograms were analyzed by core lab. Mortality data over 10 years were obtained from National Death Index. (1) Black women had lower mean CHEST cluster scores (0.60±0.30 vs. 0.73±30, p=0.002), but higher STOMACH scores (0.41±0.25 vs. 0.30±0.25, p=0.011) than white women. (2) Prevalence and severity of CAD did not differ in black and white women and was not predicted by symptom cluster scores. (3) All-cause mortality rates were 24.9% in blacks versus 14.5% in whites, p=0.007; and cardiovascular mortality 22.5% vs.8.8%, p=0.001. Symptom clusters were not predictive of adverse events in white women. However, black women with a low TYPICAL score had significantly higher mortality compared to those with a high TYPICAL score (43% vs. 10%, p=0.006). Among women undergoing coronary angiography, black women report fewer chest-related and more stomach-related symptoms, regardless of presence or severity of CAD, and these racial symptom presentation differences are linked with the more adverse prognosis observed in the black women. Atypical symptom presentation may be a barrier to appropriate and timely diagnosis and treatment and contribute to poorer outcomes for black women.

  19. Ability of new octapolar bioimpedance spectroscopy analyzers to predict 4-component-model percentage body fat in Hispanic, black, and white adults.

    Science.gov (United States)

    Gibson, Ann L; Holmes, Jason C; Desautels, Richard L; Edmonds, Lyndsay B; Nuudi, Laura

    2008-02-01

    New, vertical, 8-electrode bioimpedance spectroscopy (BIS) analyzers provide detailed body-composition and nutritional information within 2 min. This is the first report on BIS's accuracy in predicting relative fatness [percentage body fat (%BF)] in a heterogeneous sample according to a multicomponent model criterion. We compared %BF measurements from 2 BIS devices with those from a multicomponent model in a sample of Hispanic, black, and white adults. Equal numbers of apparently healthy men and women (n = 75 of each) from each racial-ethnic group, diverse in body mass index and age, volunteered. Reference %BF (%BF(4C)) was computed by using a 4-component (4C) model with total bone mineral content obtained from dual-energy X-ray absorptiometry, body density from underwater weighing with measured residual lung volume, and total body water from traditional BIS. Estimations from InBody 720 (%BF(720)) and InBody 320 (%BF(320)) BIS analyzers were validated against %BF(4C). The %BF(720) (r = 0.85, SEE = 5.19%BF) and %BF(320) (r = 0.84, SEE = 5.17%BF) correlations were significant (P < 0.05) in the men; main effects were nonsignificant. Correlations for %BF(720) (r = 0.88, SEE = 4.85%BF) and %BF(320) (r = 0.89, SEE = 4.82%BF) also were significant in the women (P < 0.05); there was a main effect for method but not race-ethnicity. There were no sex-specific overestimations or underestimations at the extremes of the distributions. BIS estimates of %BF(4C) were well correlated in men and women. There were no significant methodologic differences in the men. The %BF(4C) was significantly underestimated by %BF(720) and %BF(320) in the women.

  20. Between-group variation in female dispersal, kin composition of groups, and proximity patterns in a black-and-white colobus monkey (Colobus vellerosus.

    Directory of Open Access Journals (Sweden)

    Eva C Wikberg

    Full Text Available A growing body of evidence shows within-population variation in natal dispersal, but the effects of such variation on social relationships and the kin composition of groups remain poorly understood. We investigate the link between dispersal, the kin composition of groups, and proximity patterns in a population of black-and-white colobus (Colobus vellerosus that shows variation in female dispersal. From 2006 to 2011, we collected behavioral data, demographic data, and fecal samples of 77 males and 92 females residing in eight groups at Boabeng-Fiema, Ghana. A combination of demographic data and a genetic network analysis showed that although philopatry was female-biased, only about half of the females resided in their natal groups. Only one group contained female-female dyads with higher average relatedness than randomly drawn animals of both sexes from the same group. Despite between-group variation in female dispersal and kin composition, female-female dyads in most of the study groups had higher proximity scores than randomly drawn dyads from the same group. We conclude that groups fall along a continuum from female dispersed, not kin-based, and not bonded to female philopatric, kin-based, and bonded. We found only partial support for the predicted link between dispersal, kin composition, and social relationships. In contrast to most mammals where the kin composition of groups is a good predictor of the quality of female-female relationships, this study provides further support for the notion that kinship is not necessary for the development and maintenance of social bonds in some gregarious species.

  1. Black and White Women's Leadership

    OpenAIRE

    Showunmi, Victoria; Atewologun, Doyin

    2013-01-01

    This paper contributes to literature on ethnic identity and experiences in the workplace leadership and identity by examining how race, gender and class may confer disadvantage or bestow privilege in accessing leadership positions and enacting the role of leader. We interviewed 130 white and BME women leaders in public and private sector organisations in the UK to gather their reflections on how they defined leadership, how their identities as leaders had developed and their experiences of en...

  2. Aerial Photography and Imagery, Ortho-Corrected, Historic 1958 black and white aerial photography for Wicomico County, Maryland. Imagery was scanned from historic hard copy images and georeferenced to current imagery. This data is available via map service., Published in 2010, 1:12000 (1in=1000ft) scale, Eastern Shore Regional GIS Cooperative.

    Data.gov (United States)

    NSGIC Regional | GIS Inventory — Aerial Photography and Imagery, Ortho-Corrected dataset current as of 2010. Historic 1958 black and white aerial photography for Wicomico County, Maryland. Imagery...

  3. Racial discrimination & cardiovascular disease risk: my body my story study of 1005 US-born black and white community health center participants (US.

    Directory of Open Access Journals (Sweden)

    Nancy Krieger

    Full Text Available To date, limited and inconsistent evidence exists regarding racial discrimination and risk of cardiovascular disease (CVD.Cross-sectional observational study of 1005 US-born non-Hispanic black (n = 504 and white (n = 501 participants age 35-64 randomly selected from community health centers in Boston, MA (2008-2010; 82.4% response rate, using 3 racial discrimination measures: explicit self-report; implicit association test (IAT, a time reaction test for self and group as target vs. perpetrator of discrimination; and structural (Jim Crow status of state of birth, i.e. legal racial discrimination prior 1964.Black and white participants both had adverse cardiovascular and socioeconomic profiles, with black participants most highly exposed to racial discrimination. Positive crude associations among black participants occurred for Jim Crow birthplace and hypertension (odds ratio (OR 1.92, 95% confidence interval (CI 1.28, 2.89 and for explicit self-report and the Framingham 10 year CVD risk score (beta = 0.04; 95% CI 0.01, 0.07; among white participants, only negative crude associations existed (for IAT for self, for lower systolic blood pressure (SBP; beta = -4.86; 95% CI -9.08, -0.64 and lower Framingham CVD score (beta = -0.36, 95% CI -0.63, -0.08. All of these associations were attenuated and all but the white IAT-Framingham risk score association were rendered null in analyses that controlled for lifetime socioeconomic position and additional covariates. Controlling for racial discrimination, socioeconomic position, and other covariates did not attenuate the crude black excess risk for SBP and hypertension and left unaffected the null excess risk for the Framingham CVD score.Despite worse exposures among the black participants, racial discrimination and socioeconomic position were not associated, in multivariable analyses, with risk of CVD. We interpret results in relation to constrained variability of exposures and outcomes and discuss

  4. Vitamin C in plasma is inversely related to blood pressure and change in blood pressure during the previous year in young Black and White women

    Directory of Open Access Journals (Sweden)

    Hudes Mark

    2008-12-01

    Full Text Available Abstract Background The prevalence of hypertension and its contribution to cardiovascular disease risk makes it imperative to identify factors that may help prevent this disorder. Extensive biological and biochemical data suggest that plasma ascorbic acid may be such a factor. In this study we examined the association between plasma ascorbic acid concentration and blood pressure (BP in young-adult women. Methods Participants were 242 Black and White women aged 18–21 yr from the Richmond, CA, cohort of the National Heart, Lung and Blood Institute Growth and Health Study. We examined the associations of plasma ascorbic acid with BP at follow-up year 10, and with change in BP during the previous year. Results In cross-sectional analysis, plasma ascorbic acid at year 10 was inversely associated with systolic BP and diastolic BP after adjusting for race, body mass index, education, and dietary intake of fat and sodium. Persons in the highest one-fourth of the plasma ascorbic acid distribution had 4.66 mmHg lower systolic BP (95% CI 1.10 to 8.22 mmHg, p = 0.005 and 6.04 mmHg lower diastolic BP (95% CI 2.70 to 9.38 mmHg, p = 0.0002 than those in the lowest one-fourth of the distribution. In analysis of the change in BP, plasma ascorbic acid was also inversely associated with change in systolic BP and diastolic BP during the previous year. While diastolic blood pressure among persons in the lowest quartile of plasma ascorbic acid increased by 5.97 mmHg (95% CI 3.82 to 8.13 mmHg from year 9 to year 10, those in the highest quartile of plasma vitamin C increased by only 0.23 mmHg (95% CI -1.90 to +2.36 mmHg (test for linear trend: p Conclusion Plasma ascorbic acid was found to be inversely associated with BP and change in BP during the prior year. The findings suggest the possibility that vitamin C may influence BP in healthy young adults. Since lower BP in young adulthood may lead to lower BP and decreased incidence of age-associated vascular events in

  5. Kirtland's Warbler Wildlife Management Area Comprehensive Conservation Plan

    Data.gov (United States)

    Department of the Interior — The Comprehensive Conservation Plan (CCP) for Kirtland’s Warbler Wildlife Management Area (WMA) was signed on September 10, 2009, completing a planning process that...

  6. Cerulean Warbler occurrence and habitat use of Oklahoma

    Science.gov (United States)

    Leslie, David M.; O'Connell, Timothy J.; Cavalieri, Vincent S.

    2011-01-01

    Dendroica cerulea (Cerulean Warbler) is a migrant songbird that has declined rangewide in recent decades. We surveyed 150 sites in 2006–2007 to determine if this species still occupied its former breeding range in Oklahoma. We located Cerulean Warblers at 5 sites and confirmed breeding on north slopes of two heavily forested ridges in the Ouachita Mountains. We did not encounter Cerulean Warblers in any bottomland hardwoods, despite the former widespread distribution and abundance of the species in such habitats. While habitat loss and degradation may limit occurrence of Cerulean Warbler in some areas, the pattern of decline for this species at the edge of its range in Oklahoma is also consistent with abandonment of peripheral range as the range-wide population declines.

  7. Seres vivos y artefactos: ¿efectos categoriales producto de la ausencia de color en tareas de denominación de dibujos? (Living things and artifacts: categorial effects in black-and-white picture naming tasks?

    Directory of Open Access Journals (Sweden)

    María Macarena Martínez-Cuitiño

    2015-04-01

    Full Text Available Patients with acquired brain injury may have difficulties in processing a unique semantic category. In patients with the most common semantic deficits, living things is the most commonly compromised domain. Nevertheless, the results of assessing healthy participants are contradictory. Most studies with healthy participants reported better performance with the category of living things, whereas other studies have reported better performance with artifacts, depending on the type of material used. Although researchers generally use black-and-white pictures to assess semantic categories, this kind of material omits an essential perceptual attribute in processing living things: colour. This study assessed a group of young healthy participants to determine differences in naming living things and artifacts in a naming task using black-and-white pictures. The stimuli used were matched according to the major lexical-semantic variables: name agreement, visual complexity, lexical frequency, conceptual familiarity, age of acquisition, number of syllables, and number of phonemes. The results show that healthy participants are more accurate and faster at naming when categorizing artifacts and that artifacts have an advantage over the category living things in which colour is a key attribute (animals and fruits/vegetables. This advantage is lost in relation to the category body parts in which colour is not an essential attribute for their recognition.

  8. Black women’s ‘two-ness’ in african-american literature: can black and white worlds join together? = A dualidade de mulheres negras na literatura afro-americana: os mundos negro e branco podem se unir?

    Directory of Open Access Journals (Sweden)

    José Endoença Martins

    2010-01-01

    Full Text Available The article discusses how black women keep contacts with both black and white worlds in novels written by African-American female writers. In Toni Morrison’s (1970 The Bluest Eye, Pecola Breedlove keeps contact with the white world through her assimilationist behavior; in Alice Walker’s (1982 The Color Purple, Celie freezes herself in the black world by playing the role of the nationalist Negro; finally, in Lorraine Hansberry’s (1987 A Raisin in the Sun, Mama Younger joins black and white worlds together when she develops a catalyst agenda, as she moves to a white neighborhood.O artigo discute como mulheres negras mantêm contato com os mundos negro e branco em romances de escritoras afroamericanas. Em O Olho Mais Azul, de Toni Morrison (1970, Pecola Breedlove se alia ao mundo branco pelo comportamento assimilacionista; em A Cor Púrpura, de Alice Walker (1982, Celie se isola no mundo negro ao assumir o papel do Negro nacionalista; por fim, em Uma Cereja ao Sol, de Lorraine Hansberry (1987, Mama Younger aproxima o mundo negro e branco quando se torna catalista, indo morar num bairro branco.

  9. Migration, mitochondria, and the yellow-rumped warbler.

    Science.gov (United States)

    Toews, David P L; Mandic, Milica; Richards, Jeffrey G; Irwin, Darren E

    2014-01-01

    Discordance between mitochondrial and nuclear DNA has been noted in many systems. Asymmetric introgression of mitochondria is a common cause of such discordances, although in most cases the drivers of introgression are unknown. In the yellow-rumped warbler, evidence suggests that mtDNA from the eastern, myrtle warbler, has introgressed across much of the range of the western form, the Audubon's warbler. Within the southwestern United States myrtle mtDNA comes into contact with another clade that occurs in the Mexican black-fronted warbler. Both northern forms exhibit seasonal migration, whereas black-fronted warblers are nonmigratory. We investigated the link between mitochondrial introgression, mitochondrial function, and migration using novel genetic, isotopic, biochemical, and phenotypic data obtained from populations in the transition zone. Isotopes suggest the zone is coincident with a shift in migration, with individuals in the south being resident and populations further north becoming increasingly more migratory. Mitochondrial respiration in flight muscles demonstrates that myrtle-type individuals have a significantly greater acceptor control ratio of mitochondria, suggesting it may be more metabolically efficient. To our knowledge this is the first time this type of intraspecific variation in mitochondrial respiration has been measured in wild birds and we discuss how such mitochondrial adaptations may have facilitated introgression. © 2013 The Author(s). Evolution © 2013 The Society for the Study of Evolution.

  10. Cerulean Warbler Technical Group: Coordinating international research and conservation

    Science.gov (United States)

    Dawson, D.K.; Wigley, T.B.; Keyser, P.D.

    2012-01-01

    Effective conservation for species of concern requires interchange and collaboration among conservationists and stakeholders. The Cerulean Warbler Technical Group (CWTG) is a consortium of biologists and managers from government agencies, non-governmental organizations, academia, and industry, who are dedicated to finding pro-active, science-based solutions for conservation of the Cerulean Warbler (Setophaga cerulea). Formed in the United States in 2001, CWTG’s scope soon broadened to address the species’ ecology and conservation on both the breeding and non-breeding ranges, in partnership with biologists from South and Central America. In 2004, CWTG launched the Cerulean Warbler Conservation Initiative, a set of activities aimed at addressing information and conservation needs for the species. These include (1) studies in the core breeding range to assess Cerulean Warbler response to forest management practices and to identify mined lands that could be reforested to benefit the species, (2) ecological and demographic studies on the winter range, and (3) surveys of Cerulean Warbler distribution on the breeding and winter ranges and during migration. A rangewide conservation action plan has been completed, along with a more detailed conservation plan for the non-breeding range. CWTG and partners now move forward with on-the-ground conservation, while still addressing unmet information needs.

  11. Improving aquatic warbler population assessments by accounting for imperfect detection.

    Directory of Open Access Journals (Sweden)

    Steffen Oppel

    Full Text Available Monitoring programs designed to assess changes in population size over time need to account for imperfect detection and provide estimates of precision around annual abundance estimates. Especially for species dependent on conservation management, robust monitoring is essential to evaluate the effectiveness of management. Many bird species of temperate grasslands depend on specific conservation management to maintain suitable breeding habitat. One such species is the Aquatic Warbler (Acrocephalus paludicola, which breeds in open fen mires in Central Europe. Aquatic Warbler populations have so far been assessed using a complete survey that aims to enumerate all singing males over a large area. Because this approach provides no estimate of precision and does not account for observation error, detecting moderate population changes is challenging. From 2011 to 2013 we trialled a new line transect sampling monitoring design in the Biebrza valley, Poland, to estimate abundance of singing male Aquatic Warblers. We surveyed Aquatic Warblers repeatedly along 50 randomly placed 1-km transects, and used binomial mixture models to estimate abundances per transect. The repeated line transect sampling required 150 observer days, and thus less effort than the traditional 'full count' approach (175 observer days. Aquatic Warbler abundance was highest at intermediate water levels, and detection probability varied between years and was influenced by vegetation height. A power analysis indicated that our line transect sampling design had a power of 68% to detect a 20% population change over 10 years, whereas raw count data had a 9% power to detect the same trend. Thus, by accounting for imperfect detection we increased the power to detect population changes. We recommend to adopt the repeated line transect sampling approach for monitoring Aquatic Warblers in Poland and in other important breeding areas to monitor changes in population size and the effects of

  12. United States national prevalence of electrocardiographic abnormalities in black and white middle-age (45- to 64-Year) and older (≥65-Year) adults (from the Reasons for Geographic and Racial Differences in Stroke Study).

    Science.gov (United States)

    Prineas, Ronald J; Le, Anh; Soliman, Elsayed Z; Zhang, Zhu-Ming; Howard, Virginia J; Ostchega, Yechiam; Howard, George

    2012-04-15

    A United States national sample of 20,962 participants (57% women, 44% blacks) from the Reasons for Geographic and Racial Differences in Stroke (REGARDS) study provided general population estimates for electrocardiographic (ECG) abnormalities among black and white men and women. The participants were recruited from 2003 to 2007 by random selection from a commercially available nationwide list, with oversampling of blacks and those from the stroke belt, with a cooperation rate of 49%. The measurement of risk factors and 12-lead electrocardiograms (centrally coded using Minnesota code criteria) showed 28% had ≥1 major ECG abnormality. The prevalence of abnormalities was greater (≥35%) for those ≥65 years old, with no differences between blacks and whites. However, among men <65 years, blacks had more major abnormalities than whites, most notably for atrial fibrillation, major Q waves, and left ventricular hypertrophy. Men generally had more ECG abnormalities than women. The most common ECG abnormalities were T-wave abnormalities. The average heart rate-corrected QT interval was longer in women than in men, similar in whites and blacks, and increased with age. However, the average heart rate was greater in women than in men and in blacks than in whites and decreased with age. The prevalence of ECG abnormalities was related to the presence of hypertension, diabetes, blood pressure, and age. In conclusion, black men and women in the United States have a significantly greater prevalence of ECG abnormalities than white men and women at age 45 to 64 years; however, these proportions, although larger, tended to equalize or reverse after age 65. Copyright © 2012 Elsevier Inc. All rights reserved.

  13. Aerial Photography and Imagery, Ortho-Corrected, This data set consists of color and black-and-white digital orthophoto files acquired in the Spring of 2005. The color files cover all of Racine County in Southeastern Wisconsin. The color orthophoto files were compiled at one-inch-equals-200-feet, Published in Not Provided, 1:2400 (1in=200ft) scale, Racine County Government.

    Data.gov (United States)

    NSGIC Local Govt | GIS Inventory — Aerial Photography and Imagery, Ortho-Corrected dataset current as of unknown. This data set consists of color and black-and-white digital orthophoto files acquired...

  14. Influence of age on reproductive performance in the Seychelles warbler

    NARCIS (Netherlands)

    Komdeur, J

    1996-01-01

    I studied age-related breeding performance of the cooperatively breeding Seychelles warbler (Acrocephalus sechellensis) on Cousin Island, Seychelles, during 14 years. The annual number of young that fledged is significantly related to territory quality and number of helpers in the breeding group.

  15. Spatial behaviour and food choice of the Garden Warbler Sylvia ...

    African Journals Online (AJOL)

    Consequently, we investigated the 50% and 95% kernel density home-range size and overlap as well as food choice of 10 radio-tracked Garden Warblers at Amurum, central Nigeria and Obudu, south-eastern Nigeria. Home-range overlap was estimated using the kernelUD function within the package adehabitat in R. The ...

  16. Longer is fatter: body mass changes of migrant Reed Warblers ...

    African Journals Online (AJOL)

    Ecological barriers are the riskiest phases of the annual migrations for migratory birds. Comparatively little field data exists pertaining to the ability of migratory birds to prepare for the challenges of crossing ecological barriers, or their ability to recuperate afterward. Migrating Reed Warblers (Acrocephalus scirpaceus) were ...

  17. Phylogenetic relationships of African sunbird-like warblers: Moho ...

    African Journals Online (AJOL)

    Phylogenetic relationships of African sunbird-like warblers: Moho ( Hypergerus atriceps ), Green Hylia ( Hylia prasina ) and Tit-hylia ( Pholidornis rushiae ) ... different points in avian evolution reduces the phylogenetic signal in molecular sequence data, making difficult the reconstruction of relationships among taxa resulting ...

  18. Comparing census methods for the endangered Kirtland's Warbler

    Science.gov (United States)

    John R. Probst; Deahn M. Donner; Mike Worland; Jerry Weinrich; Phillip Huber; Kenneth R. Ennis

    2005-01-01

    We compared transect counts used for the annual official count of male Kirtland`s Warblers (Dendroica kirtlandii) to an observation-based mapping method of individually sighted males in 155 stands over 10 yrs. The annual census count almost tripled from 1990 to 1999. The transect and observation-based mapping method showed the same increasing trend...

  19. Influence of summer biogeography on wood warbler stopover abundance

    Science.gov (United States)

    Jeffrey F. Kelly; Rob Smith; Deborah M. Finch; Frank R. Moore; Wang Yong

    1999-01-01

    We evaluated the effect of summer biogeography of migrant wood warblers (Parulidae) on their stopover abundance. To characterize abundance patterns, we used mist-net capture data from spring and fall migration in the Middle Rio Grande Valley, New Mexico, spring migration on the Gulf Coast of Louisiana, and fall migration on the Gulf Coast of Alabama. To describe the...

  20. Cerulean warbler reproduction, survival, and models of population decline

    Science.gov (United States)

    David A. Buehler; James J. Giocomo; Jason Jones; Paul B. Hamel; Christopher M. Rogers; Tiffany A. Beachy; Dustin W. Varble; Charles P. Nicholson; Kirk L. Roth; JEnnifer Barg; Raleigh J. Robertson; Joseph R. Robb; Kamal Islam

    2008-01-01

    We present and compare demographic data for cerulean warblers (Dendroica cerulea) from 5 study sites across the range of the species from 1992 to 2006. We conducted field studies to collect data on daily nest survival, nest success, and young fledged per successful nest, and we used data to estimate fecundity. Daily nest survival, nest success, young...

  1. Nonbreeding isolation and population-specific migration patterns among three populations of Golden-winged Warblers

    Science.gov (United States)

    Kramer, Gunnar R.; Streby, Henry M.; Peterson, Sean M.; Lehman, Justin A.; Buehler, David A.; Wood, Petra; McNeil, Darin J.; Larkin, Jeffrey L.; Andersen, David E.

    2017-01-01

    Golden-winged Warblers (Vermivora chrysoptera) are Nearctic–Neotropical migrants experiencing varied regional population trends not fully explained by breeding-grounds factors such as nest success. A lack of detailed information on the nonbreeding distributions, migration routes, or timing of migration among populations hampers our ability to identify population processes outside the breeding period. We used geolocators to track annual movements of 21 Golden-winged Warblers from 3 North American breeding locations experiencing varying population trends to investigate the potential for nonbreeding site factors to influence breeding populations. We used the template-fit method to estimate locations of individual warblers throughout the year. Geolocator-marked warblers exhibited significant isolation among populations during migration and the nonbreeding period. During the nonbreeding period, Golden-winged Warblers from Minnesota, USA (n = 12) occurred in Central America from southern Mexico to central Nicaragua; warblers from Tennessee, USA (n = 7) occurred along the border of northern Colombia and Venezuela; and warblers from Pennsylvania, USA (n = 2) occurred in north-central Venezuela. Warblers travelled at slower rates over more days in fall migration than spring migration. Fall migration routes at the Gulf of Mexico were population-specific, whereas spring routes were more varied and overlapped among populations. Golden-winged Warblers from Pennsylvania migrated 4,000 and 5,000 km yr−1 farther than Tennessee and Minnesota warblers, respectively, and spent almost twice as long migrating in the fall compared to Minnesota warblers. Our results reveal nearly complete temporal and geographic isolation among 3 populations of Golden-winged Warblers throughout the annual cycle, resulting in opportunities for population- and site-specific factors to differentially influence populations outside the breeding period. Our findings highlight the need for monitoring

  2. Influence of helping and breeding experience on reproductive performance in the Seychelles warbler: A translocation experiment

    OpenAIRE

    Komdeur, J

    1996-01-01

    Reproductive success of the cooperative breeding Seychelles warbler (Acrocephalus sechellensis) increases with age. This age effect is not due to differential survival or increased reproductive effort, but to accumulated helping and breeding experience. In their first year of breeding, reproductive performance of inexperienced warblers with neither helping nor breeding experience was significantly lower than that of warblers of the same age with either previous helping or breeding experience....

  3. Habitat-specific foraging of prothonotary warblers: Deducing habitat quality

    Science.gov (United States)

    Lyons, J.E.

    2005-01-01

    Foraging behavior often reflects food availability in predictable ways. For example, in habitats where food availability is high, predators should attack prey more often and move more slowly than in habitats where food availability is low. To assess relative food availability and habitat quality, I studied the foraging behavior of breeding Prothonotary Warblers (Protonotaria citrea) in two forest habitat types, cypress-gum swamp forest and coastal-plain levee forest. I quantified foraging behavior with focal animal sampling and continuous recording during foraging bouts. I measured two aspects of foraging behavior: 1) prey attack rate (attacks per minute), using four attack maneuvers (glean, sally, hover, strike), and 2) foraging speed (movements per minute), using three types of movement (hop, short flight [???1 m], long flight [>1 m]). Warblers attacked prey more often in cypress-gum swamp forest than in coastal-plain levee forest. Foraging speed, however, was not different between habitats. I also measured foraging effort (% time spent foraging) and relative frequency of attack maneuvers employed in each habitat; neither of these variables was influenced by forest type. I conclude that Prothonotary Warblers encounter more prey when foraging in cypress-gum swamps than in coastal-plain levee forest, and that greater food availability results in higher density and greater reproductive success for birds breeding in cypress-gum swamp.

  4. How often do condoms fail? : A cross-sectional study exploring incomplete use of condoms, condom failures, and other condom problems among Black and White MSM in the Southern U.S

    Science.gov (United States)

    Hernández-Romieu, Alfonso C.; Siegler, Aaron; Sullivan, Patrick S.; Crosby, Richard; Rosenberg, Eli S.

    2015-01-01

    Objectives Compare the occurrence of risk-inducing condom events (condom failures and incomplete use) and the frequency of their antecedents (condom errors, fit/feel problems, and erection problems) between Black and White MSM, and determine the associations between risk-inducing condom events and their antecedents. Methods We studied cross-sectional data of 475 MSM who indicated using a condom as an insertive partner in the previous 6 months enrolled in a cohort study in Atlanta, GA. Results Nearly 40% of Black MSM reported breakage or incomplete use, and they were more likely to report breakage, early removal, and delayed application of a condom than White MSM. Only 31% and 54% of MSM reported correct condom use and suboptimal fit/feel of a condom respectively. The use of oil-based lubricants and suboptimal fit/feel were associated with higher odds of reporting breakage (P = 0.009). Suboptimal fit/feel was also associated with higher odds of incomplete use of condoms (P condoms and condom failures were especially common among Black MSM. Our findings indicate that condoms likely offered them less protection against HIV/STI when compared to White MSM. More interventions are needed, particularly addressing the use of oil-based lubricants and suboptimal fit/feel of condoms. PMID:25080511

  5. How often do condoms fail? A cross-sectional study exploring incomplete use of condoms, condom failures and other condom problems among black and white MSM in southern U.S.A.

    Science.gov (United States)

    Hernández-Romieu, Alfonso C; Siegler, Aaron J; Sullivan, Patrick S; Crosby, Richard; Rosenberg, Eli S

    2014-12-01

    To compare the occurrence of risk-inducing condom events (condom failures and incomplete use) and the frequency of their antecedents (condom errors, fit/feel problems and erection problems) between black and white men who have sex with men (MSM), and determine the associations between risk-inducing condom events and their antecedents. We studied cross-sectional data of 475 MSM who indicated using a condom as an insertive partner in the previous 6 months enrolled in a cohort study in Atlanta, Georgia, USA. Nearly 40% of black MSM reported breakage or incomplete use, and they were more likely to report breakage, early removal and delayed application of a condom than white MSM. Only 31% and 54% of MSM reported correct condom use and suboptimal fit/feel of a condom, respectively. The use of oil-based lubricants and suboptimal fit/feel were associated with higher odds of reporting breakage (p=0.009). Suboptimal fit/feel was also associated with higher odds of incomplete use of condoms (pfit/feel of condoms. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

  6. 78 FR 68370 - Endangered and Threatened Wildlife and Plants; Technical Corrections for Kirtland's Warbler

    Science.gov (United States)

    2013-11-14

    ...; Technical Corrections for Kirtland's Warbler AGENCY: Fish and Wildlife Service, Interior. ACTION: Direct... kirtlandii (Kirtland's warbler) under the Endangered Species Act of 1973, as amended (Act). We are revising..., Ecological Services Field Office, 2651 Coolidge Road, East Lansing, Michigan 44823; telephone 517-351-6326...

  7. Population increase in Kirtland's warbler and summer range expansion to Wisconsin and Michigan's Upper Peninsula, USA

    Science.gov (United States)

    John R. Probst; Deahn M. Donner; Carol I. Bocetti; Steve Sjogren

    2003-01-01

    The threatened Kirtland's warbler Dendroica kirtlandii breeds in stands of young jack pine Pinus banksiana growing on well-drained soils in Michigan, USA. We summarize information documenting the range expansion of Kirtland's warbler due to increased habitat management in the core breeding range in the Lower Peninsula of...

  8. Predation risk affects trade-off between nest guarding and foraging in Seychelles warblers

    NARCIS (Netherlands)

    Komdeur, J; Kats, RKH

    1999-01-01

    The fitness costs of egg loss for Seychelles warblers (Acrocephalus sechellensis) on Cousin Island are considerable because warblers have a single-egg clutch and no time to lay a successful replacement clutch. On the islands of Cousin and Cousine, with equal densities of Seychelles fodies (Foudia

  9. Passing the baton of action from research to conservation implementation for Cerulean Warbler (Setophaga cerulea)

    Science.gov (United States)

    Paul. B. Hamel; David Mehlman; Sebastian Herzog; Kenneth C. Rosenberg; Jason. Jones

    2012-01-01

    When El Grupo Cerúleo, a sub-committee of the Cerulean Warbler Technical Group, was formed in 2002, the task of elucidating the nonbreeding distribution, ecology and behavior of the Cerulean Warbler (Setophaga cerulea) was large, our understanding of habitat needs was limited, there was fear that little suitable habitat existed, and conservation partnerships within...

  10. Winter habitat occurrence patterns of temperate migrant birds in Belize

    Science.gov (United States)

    Dawson, D.K.; Robbins, C.S.; Sauer, J.R.

    1992-01-01

    We used mist nets and point counts to sample bird populations in 61 sites in Belize during January-March of 1987-1991. Sites were classified as forest, second growth, woody agricultural crops (citrus, mango, cacao, and cashew), or non-woody agricultural crops (rice and sugar cane). We evaluated patterns of occurence of wintering temperate migrant bird species in these habitats. Mist net captures of 22 of 31 migrant species differed significantly among habitats. Of these, 13 species were captured more frequently in the agricultural habitats. American Redstart (Setophaga ruticilla), Black-and-white Warbler (Mniotilta varia), and Magnolia Warbler (Dendroica magnolia) were among the species captured most frequently in woody agricultural habitats; captures of Common Yellowthroat (Geothlypis trichas), Indigo Bunting (Passerina cyanea), and Northern (lcterus galbula) and Orchard orioles (I. spur/anus) were highest in the non-woody agricultural sites. We relate these occurrence patterns to trends in breeding populations in North America. While count data provide a wide picture of winter habitat distribution of migrants, more intensive work is necessary to assess temporal and geographic variation of migrant bird use of agricultural habitats.

  11. Elevational gradient in clutch size of Red-faced Warblers

    Science.gov (United States)

    Dillon, Kristen G.; Conway, Courtney J.

    2015-01-01

    Our understanding of life history evolution has benefited from debates regarding the underlying causes, and geographic ubiquity, of spatial patterns in avian clutch sizes. Past studies have revealed that birds lay smaller clutch sizes at higher elevation. However, in most previous studies, investigators have failed to adequately control for elevational differences in breeding phenology. To better understand the elevational gradient in avian clutch size, we need to know how clutch size changes across the entire elevational breeding range of a species (i.e., the shape of the relationship between elevation and clutch size), and whether the elevational gradient in clutch size is merely an artifact of elevational gradients in breeding phenology or breeding season length. We examined the relationship between breeding elevation and clutch size of Red-faced Warblers (Cardellina rubrifrons) along a 1000-m elevational gradient in Arizona. Our objectives were to determine how clutch size changed with elevation, and if the relationship between clutch size and elevation merely reflected elevational changes in breeding season length or phenology. The proportion of 5-egg clutches decreased and the proportion of 3- and 4-egg clutches increased non-linearly with increasing elevation, even after controlling for the elevational gradient in nest initiation date. Thus, average clutch size declined across the elevational breeding range of Red-faced Warblers, but this decline was not due to elevational variation in breeding phenology. Timing of breeding changed, but the duration of the breeding season did not change appreciably across the elevational gradient. Hence, elevational differences in breeding season length or breeding phenology cannot explain why Red-faced Warblers (and perhaps other birds) breeding at higher elevations have smaller clutches.

  12. Estimating golden-cheeked warbler immigration: Implications for the spatial scale of conservation

    Science.gov (United States)

    Duarte, A.; Weckerly, F.W.; Schaub, M.; Hatfield, Jeffrey S.

    2016-01-01

    Understanding the factors that drive population dynamics is fundamental to species conservation and management. Since the golden-cheeked warbler Setophaga chrysoparia was first listed as endangered, much effort has taken place to monitor warbler abundance, occupancy, reproduction and survival. Yet, despite being directly related to local population dynamics, movement rates have not been estimated for the species. We used an integrated population model to investigate the relationship between immigration rate, fledging rate, survival probabilities and population growth rate for warblers in central Texas, USA. Furthermore, using a deterministic projection model, we examined the response required by vital rates to maintain a viable population across varying levels of immigration. Warbler abundance fluctuated with an overall positive trend across years. In the absence of immigration, the abundance would have decreased. However, the population could remain viable without immigration if both adult and juvenile survival increased by almost half or if juvenile survival more than doubled. We also investigated the response required by fledging rates across a range of immigration in order to maintain a viable population. Overall, we found that immigration was required to maintain warbler target populations, indicating that warbler conservation and management programs need to be implemented at larger spatial scales than current efforts to be effective. This study also demonstrates that by using limited data within integrated population models, biologists are able to monitor multiple key demographic parameters simultaneously to gauge the efficacy of strategies designed to maximize warbler viability in a changing landscape.

  13. Pre-nesting and nesting behavior of the Swainson's warbler

    Science.gov (United States)

    Meanley, B.

    1969-01-01

    The Swainson?s Warbler is one of the least known of southern birds. Although fairly common in some parts of its summer range, observations of its breeding biology have been made by very few persons. The present study was conducted mostly at Macon, Georgia; Pendleton Ferry, Arkansas; and Dismal Swamp, Virginia....In central Georgia and east-central Arkansas, Swainson?s Warblers usually arrive on their territories during the first two weeks in April. Territories in several localities ranged in size from 0.3 to 4.8 acres. A color-marked Arkansas male occupied the same territory for at least four months. Hostile encounters between territorial male Swainson?s Warblers usually take place along the boundary of adjacent territories. Paired males were more aggressive than unpaired males. Toward the end of an encounter one of the two males would usually perform a display in which the wing and tail feathers were spread and the tail vibrated. Following boundary encounters males drifted back onto their territories and usually sang unbroken courses of songs for several minutes.....During pre-nesting at Macon, a mated pair spent the day mostly on the ground within 20 feet of each other, often foragin g 3 to 4 feet apart. What may have been a form of courtship display, in which the male flew from a perch down to the female and either pecked her rump or pounced on her, occurred about three times each hour throughout the day. During this period the male sang less than at other times during the breeding season.....First nests are usually built by the first week in May. Although other investigators reported finding nests of this species outside of the defended territory, all nests that I have found were within the territory. The large, bulky nest of this species usually is placed 2-6 feet above the ground. It is built by the female from materials gathered close to the nest site; and takes two or three days to complete.....Three and occasionally four white eggs are laid. The female

  14. The Black and White Symbolic Matrix.

    Science.gov (United States)

    Stabler, John R.; Goldberg, Faye J.

    Although many authors have mentioned examples of how black usually connotes a negative evaluation and white a positive evaluation, the literature on the topic has not yet included an attempt to list examples comprehensively. Those which are cited here come from a wide variety of sources: primarily from dictionaries, books of slang, and personal…

  15. Tactical Black and White Facsimile Equipment.

    Science.gov (United States)

    TRANSMITTER RECEIVERS, FIBER OPTICS, INTEGRATED CIRCUITS, DATA PROCESSING, ELECTRONIC SCANNERS, OPTICAL SCANNING, ELECTROOPTICS, CODING, DECODING, ELECTRONIC RECORDING SYSTEMS, RECORDING PAPER , DATA TRANSMISSION SYSTEMS, AUSTRALIA .

  16. Are penguins black-and-white?

    International Nuclear Information System (INIS)

    Zenczykowski, P.

    1995-03-01

    Contribution of low-energy ''eye'' and ''figure-eight'' quark diagrams to the K → π weak transitions are studied in a hadron-level phenomenological approach. It is shown that these contributions may be estimated by considering meson-cloud effect. If all intermediate mesons under consideration are degenerate only the ''eye'' (low-energy penguin) diagrams is nonvanishing. When allowance is made for smaller mass of pseudoscalar mesons, the contribution of ''figure-eight'' diagrams turns out to enhance the ΔI = 1/2 (suppress the ΔI = 3/2) amplitudes naturally. The overall long-distance-induced enhancement of the ratio of the Δ I = 1/2 amplitudes over the Δ I = 3/2 amplitudes is estimated at around 4-8. (author). 27 refs, 3 figs, 2 tabs

  17. Carpe Diem in Black and White

    DEFF Research Database (Denmark)

    Elias, Camelia

    . The narrative draws heavily on the myth of Don Juan, who after having scored a host of women has to pay for his sins. But while the narrative also draws on all sorts of other representations of Don Juanism, from biblical intertextual references to Mozart's Don Giovanni, and thus relies on a plot development...

  18. Demographics of the Golden-cheeked Warbler (Dendroica chrysoparia) on Fort Hood, Texas

    National Research Council Canada - National Science Library

    Jette, Leslie

    1998-01-01

    .... To assist in conservation and recovery of the Golden-cheeked Warbler and comply with the Endangered Species Act, environmental managers need information on the demographic parameters of the population on Fort Hood...

  19. Parentage assignment and extra-group paternity in a cooperative breeder : the Seychelles warbler (Acrocephalus sechellensis)

    NARCIS (Netherlands)

    Richardson, DS; Jury, FL; Blaakmeer, K; Komdeur, J; Burke, T

    We describe the development and initial application of a semiautomated parentage testing system in the Seychelles warbler (Acrocephalus sechellensis). This system used fluorescently labelled primers for 14 polymorphic microsatellite loci in two multiplex loading groups to genotype efficiently over

  20. Influence of helping and breeding experience on reproductive performance in the Seychelles warbler : A translocation experiment

    NARCIS (Netherlands)

    Komdeur, J

    1996-01-01

    Reproductive success of the cooperative breeding Seychelles warbler (Acrocephalus sechellensis) increases with age. This age effect is not due to differential survival or increased reproductive effort, but to accumulated helping and breeding experience. In their first year of breeding, reproductive

  1. Hybrid zone dynamics, assortative mating, and migratory programmes in a willow warbler migratory divide

    OpenAIRE

    Larson, Keith

    2012-01-01

    In this thesis I will compare and contrast the two willow warbler subspecies (Phylloscopus trochilus trochilus and P. t. acredula) with differing migratory phenotypes (or "migratype") in the context of their migratory divide and hybrid zone in central Sweden. Their migratory programs differ in the direction and distance traveled during migration. The "northern" willow warblers migrate south-southeast through the Balkan Peninsula to winter in eastern Africa. The "south...

  2. Does fragmentation of wetlands affect gene flow in sympatric Acrocephalus warblers with different migration strategies?

    OpenAIRE

    Ceresa, Francesco; Belda, E.J.; Kvist, Laura; Rguibi-Idrissi, Hamid; Monrós González, Juan Salvador

    2015-01-01

    Wetlands are naturally patchy habitats, but patchiness has been accentuated by the extensive wetlands loss due to human activities. In such a fragmented habitat, dispersal ability is especially important to maintain gene flow between populations. Here we studied population structure, genetic diversity and demographic history of Iberian and North African populations of two wetland passerines, the Eurasian reed warbler Acrocephalus scirpaceus and the moustached warbler Acrocephalus melanopogon....

  3. Regional habitat needs of a nationally listed species, Canada Warbler (Cardellina canadensis, in Alberta, Canada

    Directory of Open Access Journals (Sweden)

    Jeffrey R. Ball

    2016-12-01

    Full Text Available Understanding factors that affect the distribution and abundance of species is critical to developing effective management plans for conservation. Our goal was to quantify the distribution and abundance of Canada Warbler (Cardellina canadensis, a threatened old-forest associate in Alberta, Canada. The Canada Warbler has declined across its range, including in Alberta where habitat loss and alteration from urban expansion, forestry, and energy development are changing the forest landscape. We used 110,427 point count survey visits from 32,287 unique survey stations to model local-level (150-m radius circular buffers and stand-level (564-m radius circular buffers habitat associations of the Canada Warbler. We found that habitat supporting higher densities of Canada Warblers was locally concentrated yet broadly distributed across Alberta's boreal forest region. Canada Warblers were most commonly associated with older deciduous forest at the local scale, particularly near small, incised streams, and greater amounts of deciduous forest at the stand scale. Predicted density was lower in other forest types and younger age classes measured at the local scale. There was little evidence that local-scale fragmentation (i.e., edges created by linear features influenced Canada Warbler abundance. However, current forestry practices in the province likely will reduce the availability of Canada Warbler habitat over time by cutting old deciduous forest stands. Our results suggest that conservation efforts aimed at Canada Warbler focus on retaining large stands of old deciduous forest, specifically stands adjacent to streams, by increasing the width of deciduous retention buffers along streams during harvest and increasing the size and number of old forest residual patches in harvested stands.

  4. Systematic notes on Asian birds. 1. A review of the russet bush-warbler Bradypterus seebohmi (Ogilvie-Grant, 1895)

    OpenAIRE

    Dickinson, E.C.; Rasmussen, P.C.; Round, P.D.; Rozendaal, F.G.

    2000-01-01

    The bush-warbler Bradypterus mandelli (Brooks, 1875) was described from Sikkim, and numerous specimens from India were identified with it, but it was synonymised with the brown bush-warbler Bradypterus luteoventris (Hodgson, 1845) in 1881. In 1952, east Asian populations were grouped under the name of the Luzon form of the russet bush-warbler, Bradypterus seebohmi (Ogilvie-Grant, 1895). This taxonomy, however, failed to associate the Indian form and its available name mandelli, which received...

  5. Can we explain vagrancy in Europe with the autumn migration phenology of Siberian warbler species in East Russia?

    Directory of Open Access Journals (Sweden)

    Bozó László

    2016-06-01

    Full Text Available We examined the autumn migration phenology of nine Siberian breeding songbirds: Thick-billed Warbler (Iduna aedon, Black-browed Reed Warbler (Acrocephalus bistrigiceps, Pallas’s Grasshopper Warbler (Locustella certhiola, Lanceolated Warbler (L. lanceolata, Yellow-browed Warbler (Phylloscopus inornatus, Arctic Warbler (Ph. borealis, Dusky Warbler (Ph. fuscatus, Radde’s Warbler (Ph. schwarzi, Two-barred Warbler (Ph. plumbeitarsus and compared the migration dynamic characteristics with their European occurrence time. The study was carried out within the Amur Bird Project in the Russian Far East along the river Amur at Muraviovka Park between 2011 and 2014. The birds were caught with mistnets and ringed with individually numbered rings. For the characterization of the migration, we used timing, the intervals and the peaks of the migration, the percentage of the recaptures and the average time between the first and the last captures. The timing of migration in the studied species differed in the timing, the intervals (30-67 days and the migration peaks (14 August - 17 September.

  6. Extraterritorial forays and male parental care in hooded warblers.

    Science.gov (United States)

    Pitcher; Stutchbury

    2000-06-01

    Extrapair paternity is common among many songbird species yet few studies have quantified male extraterritorial foray (ETF) effort and examined potential trade-offs. One potentially important constraint for males is the need to provide parental care. Current models of male extrapair mating tactics propose that males reduce extraterritorial foray effort later in the breeding season because they face a trade-off between feeding nestlings versus pursuing extrapair matings. However, detailed field studies examining the trade-off between paternal care and male extraterritorial forays are lacking. We used radiotelemetry to quantify male extraterritorial foray effort in hooded warblers, Wilsonia citrina, to test the widely held predictions that: (1) males make significantly fewer and shorter forays during the nestling stage relative to other stages (i.e. fertile and incubating stages); and (2) male extraterritorial foray effort is negatively correlated with parental effort. Males made 0.87+/-0.09 forays/h and spent on average 12.2% of their time foraying off territory. Results were equivocal; some data suggested male foray effort decreased in relation to parental care, while other data suggested otherwise. Pairwise tests controlling for (1) extrapair mating opportunity among males and (2) male, territory and social mate quality revealed a possible trade-off between the mean duration and percentage of time in extraterritorial foray versus providing parental care. Conversely, results also revealed (1) no difference in foray rate, foray duration or percentage of time spent off territory over the various stages of the breeding season, (2) no relationship between male foray effort and male feeding rate, and (3) no difference in foray rate in pairwise comparisons, controlling for variability in extrapair mating opportunity and male quality. Overall, the trade-off between providing male parental care and pursuing alternative mating tactics may not be as strong for male hooded

  7. Modeling the flocking propensity of passerine birds in two Neotropical habitats.

    Science.gov (United States)

    Pomara, Lars Y; Cooper, Robert J; Petit, Lisa J

    2007-08-01

    We examined the importance of mixed-species flock abundance, individual bird home range size, foraging height, and foraging patch characteristics in predicting the propensity for five Neotropical passerine bird species (Slaty Antwren, Myrmotherula schisticolor; Golden-crowned Warbler, Basileuterus culicivorus; Slate-throated Redstart, Myioborus miniatus; Wilson's Warbler, Wilsonia pusilla; and Black-and-white Warbler, Mniotilta varia) to forage within flocks, rather than solitarily. We used study plots in primary mid-elevation forest and in shade coffee fields in western Panama. We expected that all species would spend as much time as possible flocking, but that the social and environmental factors listed above would limit compatibility between flock movements and individual bird movements, explaining variability in flocking propensity both within and among species. Flocking propensity was well predicted by home range size and flock abundance together, for four of the five species. While flock abundance was uniform across plots, home range sizes varied among species and plots, so that home range size appeared to be the principle factor limiting flocking propensity. Estimates of flock abundance were still required, however, for calculating flocking propensity values. Foraging height and patch characteristics slightly improved predictive ability for the remaining species, M. miniatus. In general, individual birds tended to join flocks whenever one was available inside their home range, regardless of a flock's specific location within the home range. Flocking propensities of individual species were lower in shade coffee fields than in forests, and probably vary across landscapes with variations in habitat. This variability affects the stability and species composition of flocks, and may affect survival rates of individual species.

  8. Systematic notes on Asian birds. 1. A review of the russet bush-warbler Bradypterus seebohmi (Ogilvie-Grant, 1895)

    NARCIS (Netherlands)

    Dickinson, E.C.; Rasmussen, P.C.; Round, P.D.; Rozendaal, F.G.

    2000-01-01

    The bush-warbler Bradypterus mandelli (Brooks, 1875) was described from Sikkim, and numerous specimens from India were identified with it, but it was synonymised with the brown bush-warbler Bradypterus luteoventris (Hodgson, 1845) in 1881. In 1952, east Asian populations were grouped under the name

  9. Landscape and local effects on occupancy and densities of an endangered wood-warbler in an urbanizing landscape

    Science.gov (United States)

    Jennifer L. Reidy; Frank R. Thompson; Courtney Amundson; Lisa O' Donnell

    2016-01-01

    Context. Golden-cheeked warblers (Setophaga chrysoparia), an endangered wood-warbler, breed exclusively in woodlands co-dominated by Ashe juniper (Juniperus ashei) in central Texas. Their breeding range is becoming increasingly urbanized and habitat loss and fragmentation are a main threat to the species' viability....

  10. Hooded Warbler Nesting Success Adjacent to Group-selection and Clearcut Edges in a Southeastern Bottomland Forest

    Science.gov (United States)

    Christopher E. Moorman; David C. Guynn; John C. Kilgo

    2002-01-01

    During the 1996, 1997, and 199X breeding seasons, WC located and monitored Hooded Warbler (Wilsonia citrina) nests in a bottomland forest and examined the effects of edge proximity, edge type, and nest-site vegetation on nesting success. SW- cessful Hooded Warbler nests were more concealed from below and were located in nest patches with a greater...

  11. Avian response to timber harvesting applied experimentally to manage Cerulean Warbler breeding populations

    Science.gov (United States)

    Sheehan, James; Wood, Petra Bohall; Buehler, David A.; Keyser, Patrick D.; Larkin, Jeffrey L.; Rodewald, Amanda D.; Wigley, T. Bently; Boves, Than J.; George, Gregory A.; Bakermans, Marja H.; Beachy, Tiffany A.; Evans, Andrea; McDermott, Molly E.; Newell, Felicity L.; Perkins, Kelly A.; White, Matthew

    2014-01-01

    Timber harvesting has been proposed as a management tool to enhance breeding habitat for the Cerulean Warbler (Setophaga cerulea), a declining Neotropical–Nearctic migratory songbird that nests in the canopy of mature eastern deciduous forests. To evaluate how this single-species management focus might fit within an ecologically based management approach for multiple forest birds, we performed a manipulative experiment using four treatments (three intensities of timber harvests and an unharvested control) at each of seven study areas within the core Cerulean Warbler breeding range. We collected pre-harvest (one year) and post-harvest (four years) data on the territory density of Cerulean Warblers and six additional focal species, avian community relative abundance, and several key habitat variables. We evaluated the avian and habitat responses across the 3–32 m2 ha−1 residual basal area (RBA) range of the treatments. Cerulean Warbler territory density peaked with medium RBA (∼16 m2 ha−1). In contrast, territory densities of the other focal species were negatively related to RBA (e.g., Hooded Warbler [Setophaga citrina]), were positively related to RBA (e.g., Ovenbird [Seiurus aurocapilla]), or were not sensitive to this measure (Scarlet Tanager [Piranga olivacea]). Some species (e.g., Hooded Warbler) increased with time post-treatment and were likely tied to a developing understory, whereas declines (e.g., Ovenbird) were immediate. Relative abundance responses of additional species were consistent with the territory density responses of the focal species. Across the RBA gradient, greatest separation in the avian community was between early successional forest species (e.g., Yellow-breasted Chat [Icteria virens]) and closed-canopy mature forest species (e.g., Ovenbird), with the Cerulean Warbler and other species located intermediate to these two extremes. Overall, our results suggest that harvests within 10–20 m2 ha−1 RBA yield the largest

  12. Research on Golden-winged Warblers: Recent progress and current needs: Chapter 14

    Science.gov (United States)

    Streby, Henry M.; Rohrbaugh, Roland W.; Buehler, David A.; Andersen, David E.; Vallender, Rachel; King, David I.; Will, Tom

    2016-01-01

    Considerable advances have been made in knowledge about Golden-winged Warblers (Vermivora chrysoptera) in the past decade. Recent employment of molecular analysis, stable-isotope analysis, telemetry-based monitoring of survival and behavior, and spatially explicit modeling techniques have added to, and revised, an already broad base of published knowledge. Here, we synthesize findings primarily from recent peer-reviewed literature on Golden-winged Warblers, from this volume and elsewhere, and we identify some of the substantial remaining research needs. We have organized this synthesis by stages of the Golden-winged Warbler annual cycle. First, we discuss the relatively well-studied breeding-grounds ecology including nesting and post-fledging ecology and hybridization with closely related Blue-winged Warblers (Vermivora cyanoptera). Second, we discuss the much-less-studied, non-breeding-grounds ecology, including the first empirical studies of non-breeding-grounds cover-type associations and spatial and social behavioral ecology. Third, we address migratory connectivity and migration ecology, for which little is known and research has only just begun. Last, we close with cautious optimism that current knowledge is adequate to inform initial conservation and management plans for Golden-winged Warblers, and with a sobering acknowledgement of the quantity of research still needed.

  13. Extensive Rangewide Mitochondrial Introgression Indicates Substantial Cryptic Hybridization in the Golden-winged Warbler (Vermivora chrysoptera

    Directory of Open Access Journals (Sweden)

    Rachel Vallender

    2009-12-01

    Full Text Available Widespread population declines of the Golden-winged Warbler (Vermivora chrysoptera are thought to be due in part to hybridization with the expanding Blue-winged Warbler (V. pinus, which predictably replaces Golden-winged Warblers at breeding sites in which the two species come into contact. However, the mechanism by which this replacement occurs remains unresolved. Recent genetic work has indicated that, even in areas where the two species have been in contact for a short period, introgression of Blue-winged mitochondrial (mtDNA and nuclear genes into Golden-winged individuals is common. To explore this process on a broader scale, we screened more than 750 individuals from nine U.S. states and three provinces to examine geographic patterns of mtDNA introgression. The only population in which all phenotypic Golden-winged Warblers had Golden-winged mtDNA haplotypes, and in which there are no breeding Blue-winged or hybrid individuals, was in the province of Manitoba, near the northwestern edge of the species' breeding distribution. The near ubiquity of mitochondrial introgression suggests that there are far fewer genetically pure populations of Golden-winged Warblers than previously believed, a finding with important implications for this threatened species.

  14. Biometry and phenology of two sibling Phylloscopus warblers on their circum-Mediterranean migrations.

    Science.gov (United States)

    Zduniak, Piotr; Yosef, Reuven; Bensusan, Keith J; Perez, Charles E; Tryjanowski, Piotr

    2015-01-01

    The Mediterranean Sea is known as an ecological barrier for numerous migratory birds flying from European breeding grounds to African wintering sites. Birds generally avoid migration over open sea and fly over land. In the Mediterranean Basin, few land bridges or bottlenecks for migratory birds exist. The narrowest are at the western and eastern extremes: the Strait of Gibraltar and Israel. Comparative studies between these locations are extremely rare to date. Therefore, in order to elucidate the differences between the two flyways, we compared data collected simultaneously for two sister leaf warbler species, the Bonelli's Warbler complex, Phylloscopus bonelli and Phylloscopus orientalis, at ringing stations in the western Mediterranean Basin Gibraltar, and the eastern Eilat, Israel. Data on biometrics and passage dates of individuals trapped at Gibraltar and Eilat were used, and it was found that mean arrival date of Western Bonelli's Warblers at Gibraltar was 15 days later than Eastern Bonelli's Warblers at Eilat. Furthermore, Western Bonelli's Warblers had shorter wings than Eastern Bonelli's Warblers. On the other hand, birds in Eilat were in poorer body condition than individuals in Gibraltar. The comparison between geographically distant stop-over sites contributes to furthering our understanding of the development of migration strategies across ecological barriers in sibling species. Our study showed that populations that breed in southwestern Europe migrate through Gibraltar and winter in West Africa are able to accomplish migration in comparatively good body condition. This is in contrast to those that winter in East Africa, migrate through Israel and have to endure the combined challenge of crossing the Sahel, Sahara and Sinai deserts before reaching their breeding grounds across southeast Europe and southwest Asia. Hence, the discrepancies described between the western and the eastern flyway suggest that individuals in the west, in general, migrate

  15. Inbreeding in the Seychelles warbler: environment-dependent maternal effects.

    Science.gov (United States)

    Richardson, David S; Komdeur, Jan; Burke, Terry

    2004-09-01

    The deleterious effects of inbreeding can be substantial in wild populations and mechanisms to avoid such matings have evolved in many organisms. In situations where social mate choice is restricted, extrapair paternity may be a strategy used by females to avoid inbreeding and increase offspring heterozygosity. In the cooperatively breeding Seychelles warbler, Acrocephalus sechellensis, neither social nor extrapair mate choice was used to avoid inbreeding facultatively, and close inbreeding occurred in approximately 5% of matings. However, a higher frequency of extra-group paternity may be selected for in female subordinates because this did reduce the frequency of mating between close relatives. Inbreeding resulted in reduced individual heterozygosity, which, against expectation, had an almost significant (P = 0.052), positive effect on survival. Conversely, low heterozygosity in the genetic mother was linked to reduced offspring survival, and the magnitude of this intergenerational inbreeding depression effect was environment-dependent. Because we controlled for genetic effects and most environmental effects (through the experimental cross-fostering of nestlings), we conclude that the reduced survival was a result of maternal effects. Our results show that inbreeding can have complicated effects even within a genetic bottlenecked population where the "purging" of recessive alleles is expected to reduce the effects of inbreeding depression.

  16. The African migration and wintering grounds of the Aquatic Warbler Acrocephalus paludicola

    DEFF Research Database (Denmark)

    Schäffer, Norbert; Walther, Bruno A.; Gutteridge, Kim

    2006-01-01

    , Mauritania, Morocco and Senegal). All present data suggest that the Aquatic Warbler migrates through north-west Africa in autumn and spring, with the wintering grounds limited to wetlands of western sub-Saharan Africa, with verified records only from Mauritania, Mali, Senegal and Ghana during the months......, Togo and Benin, or maybe even in so far unexplored wetlands in Central or East Africa. Because wetlands throughout Africa face imminent threats from agricultural and tourist development, more fieldwork is urgently needed to further pinpoint the migration and wintering grounds of the Aquatic Warbler....

  17. A probabilistic risk assessment for the Kirtland's warbler potentially exposed to chlorpyrifos and malathion during the breeding season and migration.

    Science.gov (United States)

    Moore, Dwayne Rj; Priest, Colleen D; Olson, Adric D; Teed, R Scott

    2018-03-01

    Two organophosphate pesticides, chlorpyrifos and malathion, are currently undergoing reregistration in the United States and were recently used by the US Environmental Protection Agency (USEPA) as case studies to develop a national procedure for evaluating risks to endangered species. One of the endangered bird species considered by the USEPA was the Kirtland's warbler (Setophaga kirtlandii). The Kirtland's warbler is an endangered migratory species that nests exclusively in young jack pine stands in Michigan and Wisconsin, and winters in the Bahamas. We developed probabilistic models to assess the risks of chlorpyrifos and malathion to Kirtland's warblers during the breeding season and the spring and fall migrations. The breeding area model simulates acute and chronic exposure and risk to each of 10 000 birds over a 60-d period following initial pesticide application. The model is highly species specific with regard to the foraging behavior of Kirtland's warblers during the breeding season. We simulated the maximum application rate and number of applications allowed on the labels for representative use patterns that could be found within 3 km of the breeding areas of Kirtland's warbler. The migration model simulates 10 000 birds during the course of their 12- to 23-d migration between their breeding area and the Bahamas. The model takes advantage of more than a century of observations of when, where, and for how long Kirtland's warblers forage in different habitats during the course of their migration. The data indicate that warblers only infrequently stop over in habitats that could be treated with chlorpyrifos and malathion. The breeding area and migration models resulted in predictions of very low acute and chronic risk for both pesticides to Kirtland's warblers. These results were expected, given that field observations indicate that the Kirtland's warbler has dramatically increased in abundance in recent decades. Integr Environ Assess Manag 2018

  18. Predicting patch occupancy in fragmented landscapes at the rangewide scale for an endangered species: an example of an American warbler

    KAUST Repository

    Collier, Bret A.

    2011-08-25

    AIM: Our objective was to identify the distribution of the endangered golden-cheeked warbler (Setophaga chrysoparia) in fragmented oak-juniper woodlands by applying a geoadditive semiparametric occupancy model to better assist decision-makers in identifying suitable habitat across the species breeding range on which conservation or mitigation activities can be focused and thus prioritize management and conservation planning. LOCATION: Texas, USA. METHODS: We used repeated double-observer detection/non-detection surveys of randomly selected (n = 287) patches of potential habitat to evaluate warbler patch-scale presence across the species breeding range. We used a geoadditive semiparametric occupancy model with remotely sensed habitat metrics (patch size and landscape composition) to predict patch-scale occupancy of golden-cheeked warblers in the fragmented oak-juniper woodlands of central Texas, USA. RESULTS: Our spatially explicit model indicated that golden-cheeked warbler patch occupancy declined from south to north within the breeding range concomitant with reductions in the availability of large habitat patches. We found that 59% of woodland patches, primarily in the northern and central portions of the warbler\\'s range, were predicted to have occupancy probabilities ≤0.10 with only 3% of patches predicted to have occupancy probabilities >0.90. Our model exhibited high prediction accuracy (area under curve = 0.91) when validated using independently collected warbler occurrence data. MAIN CONCLUSIONS: We have identified a distinct spatial occurrence gradient for golden-cheeked warblers as well as a relationship between two measurable landscape characteristics. Because habitat-occupancy relationships were key drivers of our model, our results can be used to identify potential areas where conservation actions supporting habitat mitigation can occur and identify areas where conservation of future potential habitat is possible. Additionally, our results can be

  19. Basal metabolic rate, food intake, and body mass in cold- and warm-acclimated Garden Warblers

    NARCIS (Netherlands)

    Klaassen, M.R.J.; Oltrogge, M.; Trost, L.

    2004-01-01

    We address the question of whether physiological flexibility in relation to climate is a general feature of the metabolic properties of birds. We tested this hypothesis in hand-raised Garden Warblers (Sylvia borin), long-distance migrants, which normally do not experience great temperature

  20. Is shared male assistance with antiparasitic nest defence costly in the polygynous great reed warbler?

    Czech Academy of Sciences Publication Activity Database

    Požgayová, Milica; Procházka, Petr; Honza, Marcel

    2013-01-01

    Roč. 85, č. 3 (2013), s. 615-621 ISSN 0003-3472 R&D Projects: GA AV ČR IAA600930605; GA AV ČR IAA600930903 Institutional support: RVO:68081766 Keywords : great reed warbler * aggressive behaviour * brood parasitism * common cuckoo * mating status Subject RIV: EG - Zoology Impact factor: 3.068, year: 2013

  1. Conservation planning and accomplishments for protection of Cerulean Warbler (Setophaga cerulea) nonbreeding habitat

    Science.gov (United States)

    Benjamin Skolnik; David Wiedenfeld; Randy Dettmers; Constantino Aucca; Lina Daza; Heidy Valle; Francisco Sornoza; Javier Robayo; David Diaz; Jane Fitzgerald; Daniel Lebbin; Paul B. Hamel

    2012-01-01

    Vital to the work of the Cerulean Warbler Technical Group has been the collaboration among members to evaluate population status and coordinate planning for future activities, principally in conservation implementation. Two plans have been produced, one a general strategy for the conservation and management of the species over its entire range, and a more restricted...

  2. Seasonal and diel patterns of song output by great reed warblers Acrocephalus arundinaceus

    Czech Academy of Sciences Publication Activity Database

    Čapek Jr., Miroslav; Kloubec, B.

    2002-01-01

    Roč. 57, č. 2 (2002), s. 267-276 ISSN 0006-3088 R&D Projects: GA AV ČR IAC6087702; GA AV ČR KSK6005114 Institutional research plan: CEZ:AV0Z6093917 Keywords : Acrocephalus warblers * seasonal and diel rhythm of song Subject RIV: EG - Zoology Impact factor: 0.169, year: 2002

  3. Grandparent helpers : The adaptive significance of older, postdominant helpers in the Seychelles warbler

    NARCIS (Netherlands)

    Richardson, David S.; Burke, Terry; Komdeur, Jan; Wedell, N.

    2007-01-01

    The possibility that older, often nonreproductive, individuals may engage in kin-directed cooperative behavior has been largely overlooked in the study of cooperative breeding. Here, we describe and investigate the adaptive significance of such "grandparent" helpers in the Seychelles warbler, the

  4. Long-term fitness benefits of egg sex modification by the Seychelles warbler

    NARCIS (Netherlands)

    Komdeur, J

    Sex-ratio theory states that if the fitness costs to the parents of producing one offspring's sex relative to the other are higher, parents should discount these costs by producing fewer individuals of the more costly sex. In the co-operatively breeding Seychelles warbler (Acrocephalus sechellensis)

  5. Influence of habitat amount, arrangement, and use on population trend estimates of male Kirtland's warblers

    Science.gov (United States)

    Deanh M. Donner; John R. Probst; Christine A. Ribic

    2008-01-01

    Kirtland's warblers (Dendroica kirtlandii) persist in a naturally patchy environment of young, regenerating jack pine forests (i.e., 5-23 years old) created after wildfires and human logging activities. We examined how changing landscape structure from 26 years of forest management and wildfire disturbances influenced population size and spatial...

  6. Reed Warbler Hosts Fine-Tune their Defenses to Track Three Decades of Cuckoo Decline

    Science.gov (United States)

    Thorogood, Rose; Davies, Nicholas B

    2013-01-01

    Interactions between avian hosts and brood parasites can provide a model for how animals adapt to a changing world. Reed warbler (Acrocephalus scirpaceus) hosts employ costly defenses to combat parasitism by common cuckoos (Cuculus canorus). During the past three decades cuckoos have declined markedly across England, reducing parasitism at our study site (Wicken Fen) from 24% of reed warbler nests in 1985 to 1% in 2012. Here we show with experiments that host mobbing and egg rejection defenses have tracked this decline in local parasitism risk: the proportion of reed warbler pairs mobbing adult cuckoos (assessed by responses to cuckoo mounts and models) has declined from 90% to 38%, and the proportion rejecting nonmimetic cuckoo eggs (assessed by responses to model eggs) has declined from 61% to 11%. This is despite no change in response to other nest enemies or mimetic model eggs. Individual variation in both defenses is predicted by parasitism risk during the host’s egg-laying period. Furthermore, the response of our study population to temporal variation in parasitism risk can also explain spatial variation in egg rejection behavior in other populations across Europe. We suggest that spatial and temporal variation in parasitism risk has led to the evolution of plasticity in reed warbler defenses. PMID:24299407

  7. Direct benefits and the evolution of female-biased cooperative breeding in Seychelles warblers

    NARCIS (Netherlands)

    Richardson, David S.; Burke, Terry; Komdeur, Jan; Dunn, P.

    2002-01-01

    Inclusive fitness benefits have been suggested to be a major selective force behind the evolution of cooperative breeding. We investigated the fitness benefits selecting for cooperative breeding in the Seychelles warbler, Acroccphalus sechellensis. A microsatellite-based genotyping method was used

  8. Plumage coloration and reproductive success in male chestnut-sided warblers

    Science.gov (United States)

    David I. King; Richard M. DeGraaf; Curtice R. Griffin

    2001-01-01

    We studied Chestnut-sided Warblers (Dendroica pensylvanica) to determine whether there exists any relationship between plumage coloration and reproductive success in this species. We observed that males with more extensive chestnut breast coloration initiated nests significantly earlier than males with less chestnut, and had marginally larger...

  9. Initial cerulean warbler response to experimental silvicultural manipulations, Desha County, Arkansas

    Science.gov (United States)

    Paul B. Hamel; Mike Staten; Rodney Wishard

    2006-01-01

    Cerulean warbler [Dendroica cerulea (Wilson) Aves, Parulidae] is a neotropical migratory bird that has become a focus of management attention. Since 1992, we have studied breeding birds on a 54-ha site owned by Anderson-Tully Company, in Desha County, AR. In 2002, we conducted an unreplicated experiment there to assess the species’ response to...

  10. Research on golden-winged warblers: recent progress and current needs

    Science.gov (United States)

    Henry M. Streby; Ronald W. Rohrbaugh; David A. Buehler; David E. Andersen; Rachel Vallender; David I. King; Tom. Will

    2016-01-01

    Considerable advances have been made in knowledge about Golden-winged Warblers (Vermivora chrysoptera) in the past decade. Recent employment of molecular analysis, stable-isotope analysis, telemetry-based monitoring of survival and behavior, and spatially explicit modeling techniques have added to, and revised, an already broad base of published...

  11. Why Seychelles Warblers fail to recolonize nearby islands : unwilling or unable to fly there?

    NARCIS (Netherlands)

    Komdeur, J; Piersma, T; Kraaijeveld, K; Kraaijeveld-Smit, F; Richardson, DS; Richardson, David S.

    The Seychelles Warbler Acrocephalus sechellensis is a rare island endemic which, from 1920 to 1988, occurred only on Cousin Island (29 ha) in the Seychelles. Despite the saturated nature of this population and the possibility of obtaining higher reproductive success on new nearby islands,

  12. Cerulean Warbler (Setophaga cerulea) spring migration stopover in northern Middle America

    Science.gov (United States)

    Melinda J. Welton; David L. Anderson; Gabriel J. Colorado; Paul B. Hamel; Diego Calderón-F.

    2012-01-01

    The Cerulean Warbler (Setophaga cerulea) has one of the longest migrations of any small passerine, traveling approximately 4,000 km between breeding grounds in eastern North America and nonbreeding residency in northern South America. However, unlike many migratory birds, little is known about this aspect of the ecology of this species. In 2004 –...

  13. Arthropods of native and exotic vegetation and their association with willow flycatchers and Wilson's warblers

    Science.gov (United States)

    Linda S. DeLay; Deborah M. Finch; Sandra Brantley; Richard Fagerlund; Michael D. Means; Jeffrey F. Kelly

    1999-01-01

    We compared abundance of migrating Willow Flycatchers and Wilson's Warblers to the abundance of arthropods in exotic and native vegetation at Bosque del Apache National Wildlife Refuge. We trapped arthropods using glue-boards in 1996 and 1997 in the same cottonwood, saltcedar, and willow habitats where we mist-netted birds during spring and fall migration. There...

  14. Insights into Wilson's Warbler migration from analyses of hydrogen stable-isotope ratios

    Science.gov (United States)

    Jeffrey F. Kelly; Viorel Atudorei; Zachary D. Sharp; Deborah M. Finch

    2002-01-01

    Our ability to link the breeding locations of individual passerines to migration stopover sites and wintering locations is limited. Stable isotopes of hydrogen contained in bird feathers have recently shown potential in this regard. We measured hydrogen stable-isotope ratios (deltaD) of feathers from breeding, migrating, and wintering Wilson's Warblers. Analyses...

  15. Low genetic differentiation among reed warbler Acrocephalus scirpaceus populations across Europe

    Czech Academy of Sciences Publication Activity Database

    Procházka, Petr; Stokke, B. G.; Jensen, H.; Fainová, Drahomíra; Bellinvia, Erica; Fossoy, F.; Vikan, J. R.; Bryja, Josef; Soler, M.

    2011-01-01

    Roč. 42, č. 2 (2011), s. 103-113 ISSN 0908-8857 R&D Projects: GA AV ČR KJB600930508; GA MŠk LC06073 Institutional research plan: CEZ:AV0Z60930519 Keywords : Acrocephalus scirpaceus * gene flow * isolation by distance * microsatellites * migration * reed warbler Subject RIV: EG - Zoology Impact factor: 2.280, year: 2011

  16. Egg mimicry in cuckoos parasitizing four sympatric species of Acrocephalus warblers

    Czech Academy of Sciences Publication Activity Database

    Edvardsen, E.; Moksnes, A.; Roskaft, E.; Oien, I. J.; Honza, Marcel

    2001-01-01

    Roč. 103, č. 4 (2001), s. 829-837 ISSN 0010-5422 Institutional research plan: CEZ:AV0Z6093917 Keywords : brood parasitism * egg mimicry * Acrocephalus warblers Subject RIV: EG - Zoology Impact factor: 1.104, year: 2001 http://www.jstor.org/stable/1370116

  17. Becoming-Speckled Warbler: Re/Creating Australian Natural History Pedagogy

    Science.gov (United States)

    Stewart, Alistair

    2011-01-01

    The speckled warbler and other woodland birds of south-eastern Australia have declined dramatically since European settlement; many species are at risk of becoming locally and/or nationally extinct. Coincidently, Australian environmental education research of the last decade has largely been silent on the development of pedagogy that reflects the…

  18. Factors affecting golden-cheeked warbler nest survival in urban and rural landscapes

    Science.gov (United States)

    Jenifer L. Reidy; Frank R. Thompson; Rebecca G. Peak

    2009-01-01

    We evaluated hypotheses concerning temporal, landscape, and habitat effects on nest survival of golden-cheeked warblers (Dendroica chrysoparia) in an urban and a rural landscape during the breeding seasons of 2005 and 2006 in central Texas, USA. We found support for temporal effects of year and cubic effect of date and included them in candidate...

  19. Estimating breeding season abundance of golden-cheeked warblers in Texas, USA

    KAUST Repository

    Mathewson, Heather A.

    2012-02-15

    Population abundance estimates using predictive models are important for describing habitat use and responses to population-level impacts, evaluating conservation status of a species, and for establishing monitoring programs. The golden-cheeked warbler (Setophaga chrysoparia) is a neotropical migratory bird that was listed as federally endangered in 1990 because of threats related to loss and fragmentation of its woodland habitat. Since listing, abundance estimates for the species have mainly relied on localized population studies on public lands and qualitative-based methods. Our goal was to estimate breeding population size of male warblers using a predictive model based on metrics for patches of woodland habitat throughout the species\\' breeding range. We first conducted occupancy surveys to determine range-wide distribution. We then conducted standard point-count surveys on a subset of the initial sampling locations to estimate density of males. Mean observed patch-specific density was 0.23 males/ha (95% CI = 0.197-0.252, n = 301). We modeled the relationship between patch-specific density of males and woodland patch characteristics (size and landscape composition) and predicted patch occupancy. The probability of patch occupancy, derived from a model that used patch size and landscape composition as predictor variables while addressing effects of spatial relatedness, best predicted patch-specific density. We predicted patch-specific densities as a function of occupancy probability and estimated abundance of male warblers across 63,616 woodland patches accounting for 1.678 million ha of potential warbler habitat. Using a Monte Carlo simulation, our approach yielded a range-wide male warbler population estimate of 263,339 (95% CI: 223,927-302,620). Our results provide the first abundance estimate using habitat and count data from a sampling design focused on range-wide inference. Managers can use the resulting model as a tool to support conservation planning

  20. SWS2 visual pigment evolution as a test of historically contingent patterns of plumage color evolution in warblers.

    Science.gov (United States)

    Bloch, Natasha I; Morrow, James M; Chang, Belinda S W; Price, Trevor D

    2015-02-01

    Distantly related clades that occupy similar environments may differ due to the lasting imprint of their ancestors-historical contingency. The New World warblers (Parulidae) and Old World warblers (Phylloscopidae) are ecologically similar clades that differ strikingly in plumage coloration. We studied genetic and functional evolution of the short-wavelength-sensitive visual pigments (SWS2 and SWS1) to ask if altered color perception could contribute to the plumage color differences between clades. We show SWS2 is short-wavelength shifted in birds that occupy open environments, such as finches, compared to those in closed environments, including warblers. Phylogenetic reconstructions indicate New World warblers were derived from a finch-like form that colonized from the Old World 15-20 Ma. During this process, the SWS2 gene accumulated six substitutions in branches leading to New World warblers, inviting the hypothesis that passage through a finch-like ancestor resulted in SWS2 evolution. In fact, we show spectral tuning remained similar across warblers as well as the finch ancestor. Results reject the hypothesis of historical contingency based on opsin spectral tuning, but point to evolution of other aspects of visual pigment function. Using the approach outlined here, historical contingency becomes a generally testable theory in systems where genotype and phenotype can be connected. © 2014 The Author(s). Evolution © 2014 The Society for the Study of Evolution.

  1. Habitat selection of two Acrocephalus warblers breeding in reed beds near Malacky (Western Slovakia)

    Czech Academy of Sciences Publication Activity Database

    Prokešová, Jarmila; Kocian, Ľ.

    2004-01-01

    Roč. 59, č. 5 (2004), s. 637-644 ISSN 0006-3088 Grant - others:VEGA(SK) 1/7197/20; VEGA(SK) 1/0017/03 Institutional research plan: CEZ:AV0Z6093917 Keywords : reed warblers * breeding * habitat selection Subject RIV: EH - Ecology, Behaviour Impact factor: 0.207, year: 2004 http://biologia.savba.sk/59_5_04/Prokesova_J.pdf

  2. The role of UV reflection in parasite egg rejection in reed warbler (Acrocephalus scirpaceus)

    OpenAIRE

    Šulc, Michal

    2012-01-01

    One of the best ways how hosts may defend their clutch against brood parasitism is recognition and rejection of parasitic eggs. It has been documented that ability to percept UV light in birds affects their behaviour. By using a spectrophotometer we found that Reed Warbler (Acrocephalus scirpaceus) eggs and Common cuckoo (Cuculus canorus) eggs differ mainly in brightness but also in UV hue. We investigated the influence of birds' UV vision on recognition and rejection of parasitic eggs. There...

  3. Reproductive success and habitat characteristics of Golden-winged Warblers in high-elevation pasturelands

    Science.gov (United States)

    Wood, Petra; Aldinger, Kyle R.

    2016-01-01

    The Golden-winged Warbler (Vermivora chrysoptera) is one of the most rapidly declining vertebrate species in the Appalachian Mountains. It is the subject of extensive range-wide research and conservation action. However, little is known about this species' breeding ecology in high-elevation pasturelands, a breeding habitat with conservation potential considering the U.S. Natural Resource Conservation Service's Working Lands for Wildlife program targeting private lands in the Appalachian Mountains. We located 100 nests of Golden-winged Warblers in pastures in and around the Monongahela National Forest in West Virginia during 2008–2012. Daily nest survival rate (mean ± SE  =  0.962 ± 0.006), clutch size (4.5 ± 0.1), and number of young fledged per nest attempt (2.0 ± 0.2) and successful nest (4.0 ± 0.1) fell within the range of values reported in other parts of the species' range and were not significantly affected by year or the presence/absence of cattle grazing. Classification tree analysis revealed that nests were in denser vegetation (≥52%) and closer to forest edges (the male's territory. Successful nests had significantly more woody cover (≥9%) within 1 m than failed nests. Our results suggest that cattle grazing at 1.2–2.4 ha of forage/animal unit with periodic mowing can create and maintain these characteristics without interfering with the nesting of Golden-winged Warblers. High-elevation pasturelands may provide a refuge for remaining populations of Golden-winged Warblers in this region.

  4. Case study: Prioritization strategies for reforestation of minelands to benefit Cerulean Warblers

    Science.gov (United States)

    McDermott, Molly E.; Shumar, Matthew B.; Wood, Petra Bohall

    2013-01-01

    The central Appalachian landscape is being heavily altered by surface coal mining. The practice of Mountaintop Removal/Valley Fill (MTRVF) mining has transformed large areas of mature forest to non-forest and created much forest edge, affecting habitat quality for mature forest wildlife. The Appalachian Regional Reforestation Initiative is working to restore mined areas to native hardwood forest conditions, and strategies are needed to prioritize restoration efforts for wildlife. We present mineland reforestation guidelines for the imperiled Cerulean Warbler, considered a useful umbrella species, in its breeding range. In 2009, we surveyed forest predicted to have Cerulean Warblers near mined areas in the MTRVF region of West Virginia and Kentucky. We visited 36 transect routes and completed songbird surveys on 151 points along these routes. Cerulean Warblers were present at points with fewer large-scale canopy disturbances and more mature oak-hickory forest. We tested the accuracy of a predictive map for this species and demonstrated that it can be useful to guide reforestation efforts. We then developed a map of hot spot locations that can be used to determine potential habitat suitability. Restoration efforts would have greatest benefit for Cerulean Warblers and other mature forest birds if concentrated near a relative-abundance hot spot, on north- and east-facing ridgetops surrounded by mature deciduous forest, and prioritized to reduce edges and connect isolated forest patches. Our multi-scale approach for prioritizing restoration efforts using an umbrella species may be applied to restore habitat impacted by a variety of landscape disturbances.

  5. Habitat Use and Body Mass Regulation among Warblers in the Sahel Region during the Non-Breeding Season.

    Science.gov (United States)

    Vafidis, James O; Vaughan, Ian P; Jones, T Hefin; Facey, Richard J; Parry, Rob; Thomas, Robert J

    2014-01-01

    Migratory birds face significant challenges across their annual cycle, including occupying an appropriate non-breeding home range with sufficient foraging resources. This can affect demographic processes such as over-winter survival, migration mortality and subsequent breeding success. In the Sahel region of Africa, where millions of migratory songbirds attempt to survive the winter, some species of insectivorous warblers occupy both wetland and dry-scrubland habitats, whereas other species are wetland or dry-scrubland specialists. In this study we examine evidence for strategic regulation of body reserves and competition-driven habitat selection, by comparing invertebrate prey activity-density, warbler body size and extent of fat and pectoral muscle deposits, in each habitat type during the non-breeding season. Invertebrate activity-density was substantially higher in wetland habitats than in dry-scrubland. Eurasian reed warblers Acrocephalus scirpaceus occupying wetland habitats maintained lower body reserves than conspecifics occupying dry-scrub habitats, consistent with buffering of reserves against starvation in food-poor habitat. A similar, but smaller, difference in body reserves between wet and dry habitat was found among subalpine warblers Sylvia cantillans but not in chiffchaffs Phylloscopus collybita inhabiting dry-scrub and scrub fringing wetlands. Body reserves were relatively low among habitat specialist species; resident African reed warbler A. baeticatus and migratory sedge warbler A. schoenobaenus exclusively occupying wetland habitats, and Western olivaceous warblers Iduna opaca exclusively occupying dry habitats. These results suggest that specialists in preferred habitats and generalists occupying prey-rich habitats can reduce body reserves, whereas generalists occupying prey-poor habitats carry an increased level of body reserves as a strategic buffer against starvation.

  6. Comparative nest-site habitat of painted redstarts and red-faced warblers in the Madrean Sky Islands of southeastern Arizona

    Science.gov (United States)

    Joseph L. Ganey; William M. Block; Jamie S. Sanderlin; Jose M. Iniguez

    2015-01-01

    Conservation of avian species requires understanding their nesting habitat requirements. We compared 3 aspects of habitat at nest sites (topographic characteristics of nest sites, nest placement within nest sites, and canopy stratification within nest sites) of 2 related species of ground-nesting warblers (Red-faced Warblers, Cardellina rubrifrons, n = 17...

  7. The cerulean warbler in Morgan-Monroe and Yellowwood State Forests, Indiana: pre-treatment data on abundance and spatial characteristics of territories

    Science.gov (United States)

    Kamal Islam; Kyle J. Kaminski; Margaret M. MacNeil; Lila Prichard. Young

    2013-01-01

    The cerulean warbler (Setophaga cerulea) is a small Neotropical migrant songbird that is currently experiencing population declines. We monitored the number of cerulean warblers, as well as size and spatial attributes of territories, before two methods of silvicultural treatments took place in six of nine study units involved in the Hardwood...

  8. Spatial and temporal migration patterns of Wilson's Warbler (Wilsonia pusilla) in the southwest as revealed by stable isotopes

    Science.gov (United States)

    Paxton, K.L.; van Riper, Charles; Theimer, T.C.; Paxton, E.H.

    2007-01-01

    We used stable hydrogen isotopes (δD) to identify the breeding locations of Wilson’s Warbler (Wilsonia pusilla) migrating through five sites spanning a cross-section of the species’ southwestern migration route during the springs of 2003 and 2004. Determining the temporal and spatial patterns of migration and degree of population segregation during migration is critical to understanding long-term population trends of migrant birds. At all five migration sites, we found a significant negative relationship between the date Wilson’s Warblers passed through the sampling station and δD values of their feathers. These data were consistent with a pattern of “leap-frog” migration, in which individuals that bred the previous season at southern latitudes migrated through migration stations earlier than individuals that had previously bred at more northern latitudes. We documented that this pattern was consistent across sites and in multiple years. This finding corroborates previous research conducted on Wilson’s Warbler during the fall migration. In addition, mean δD values became more negative across sampling stations from west to east, with the mean δD values at each station corresponding to different geographic regions of the Wilson’s Warblers’ western breeding range. These data indicate that Wilson’s Warblers passing through each station represented a specific regional subset of the entire Wilson’s Warbler western breeding range. As a result, habitat alterations at specific areas across the east-west expanse of the bird’s migratory route in the southwestern United States could differentially affect Wilson’s Warblers at different breeding areas. This migration information is critical for management of Neotropical migrants, especially in light of the rapid changes presently occurring over the southwestern landscape.

  9. Factors driving territory size and breeding success in a threatened migratory songbird, the Canada Warbler

    Directory of Open Access Journals (Sweden)

    D. T. Tyler Flockhart

    2016-12-01

    Full Text Available Successful conservation of migratory birds demands we understand how habitat factors on the breeding grounds influences breeding success. Multiple factors are known to directly influence breeding success in territorial songbirds. For example, greater food availability and fewer predators can have direct effects on breeding success. However, many of these same habitat factors can also result in higher conspecific density that may ultimately reduce breeding success through density dependence. In this case, there is a negative indirect effect of habitat on breeding success through its effects on conspecific density and territory size. Therefore, a key uncertainty facing land managers is whether important habitat attributes directly influence breeding success or indirectly influence breeding success through territory size. We used radio-telemetry, point-counts, vegetation sampling, predator observations, and insect sampling over two years to provide data on habitat selection of a steeply declining songbird species, the Canada Warbler (Cardellina canadensis. These data were then applied in a hierarchical path modeling framework and an AIC model selection approach to determine the habitat attributes that best predict breeding success. Canada Warblers had smaller territories in areas with high shrub cover, in the presence of red squirrels (Tamiasciurus hudsonicus, at shoreline sites relative to forest-interior sites and as conspecific density increased. Breeding success was lower for birds with smaller territories, which suggests competition for limited food resources, but there was no direct evidence that food availability influenced territory size or breeding success. The negative relationship between shrub cover and territory size in our study may arise because these specific habitat conditions are spatially heterogeneous, whereby individuals pack into patches of preferred breeding habitat scattered throughout the landscape, resulting in reduced

  10. Circannual variation in blood parasitism in a sub-Saharan migrant passerine bird, the garden warbler.

    Science.gov (United States)

    Hellgren, O; Wood, M J; Waldenström, J; Hasselquist, D; Ottosson, U; Stervander, M; Bensch, S

    2013-05-01

    Knowing the natural dynamics of pathogens in migratory birds is important, for example, to understand the factors that influence the transport of pathogens to and their transmission in new geographical areas, whereas the transmission of other pathogens might be restricted to a specific area. We studied haemosporidian blood parasites of the genera Plasmodium, Haemoproteus and Leucocytozoon in a migratory bird, the garden warbler Sylvia borin. Birds were sampled in spring, summer and early autumn at breeding grounds in Sweden, on migration at Capri, Italy and on arrival and departure from wintering staging areas in West Africa: mapping recoveries of garden warblers ringed in Fennoscandia and Capri showed that these sites are most probably on the migratory flyway of garden warblers breeding at Kvismaren. Overall, haemosporidian prevalence was 39%, involving 24 different parasite lineages. Prevalence varied significantly over the migratory cycle, with relatively high prevalence of blood parasites in the population on breeding grounds and at the onset of autumn migration, followed by marked declines in prevalence during migration both on spring and autumn passage. Importantly, we found that when examining circannual variation in the different lineages, significantly different prevalence profiles emerged both between and within genera. Our results suggest that differences in prevalence profiles are the result of either different parasite transmission strategies or coevolution between the host and the various parasite lineages. When separating parasites into common vs. rare lineages, we found that two peaks in the prevalence of rare parasites occur; on arrival at Swedish breeding grounds, and after the wintering period in Africa. Our results stress the importance of appropriate taxonomic resolution when examining host-parasite interactions, as variation in prevalence both between and within parasite genera can show markedly different patterns. © 2013 The Authors. Journal

  11. Does conspicuous colouration of Magpies Pica pica influence aggressive behaviour in nesting Great Reed Warblers Acrocephalus arundinaceus?

    Czech Academy of Sciences Publication Activity Database

    Trnka, A.; Požgayová, Milica

    2017-01-01

    Roč. 64, č. 1 (2017), s. 108-111 ISSN 0006-3657 Institutional support: RVO:68081766 Keywords : Magpies Pica pica * Great Reed Warblers Acrocephalus arundinaceus Subject RIV: EG - Zoology OBOR OECD: Ornithology Impact factor: 0.925, year: 2016

  12. ENERGETICS OF FATTENING AND STARVATION IN THE LONG-DISTANCE MIGRATORY GARDEN WARBLER, SYLVIA BORIN, DURING THE MIGRATORY PHASE

    NARCIS (Netherlands)

    KLAASSEN, M; BIEBACH, H

    1994-01-01

    Garden warblers (Sylvia borin) were subjected to starvation trials during their autumnal migratory phase in order to simulate a period of non-stop migration. Before, during and after this treatment the energy expenditure, activity, food intake and body mass of the subjects were monitored.

  13. A proxy of social mate choice in prairie warblers is correlated with consistent, rapid, low-pitched singing

    Science.gov (United States)

    Bruce E. Byers; Michael E. Akresh; David I. King

    2015-01-01

    In songbirds, female mate choice may be influenced by how well a male performs his songs. Performing songs well may be especially difficult if it requires maximizingmultiple aspects of performance simultaneously.We therefore hypothesized that, in a population of prairie warblers, the males most attractive to females would be those with superior performance in more than...

  14. [Book review] The Kirtland's Warbler: The Story of a Bird's Fight against extinction and the People Who Saved It

    Science.gov (United States)

    Deahn M. Donner

    2013-01-01

    The population recovery of Kirtland's Warbler (Setophaga kirtlandii) is one of the most fascinating success stories of an endangered species in the past 60 years. As the author states, the story transcends the bird and its environment. By including the human dimension of recovery efforts, this book keeps the reader involved throughout what ends...

  15. Annual cycle and migration strategies of a trans-Saharan migratory songbird : A geolocator study in the great reed warbler

    NARCIS (Netherlands)

    Lemke, Hilger W.; Tarka, Maja; Klaassen, Raymond H. G.; Akesson, Mikael; Bensch, Staffan; Hasselquist, Dennis; Hansson, Bengt

    2013-01-01

    Recent technological advancements now allow us to obtain geographical position data for a wide range of animal movements. Here we used light-level geolocators to study the annual migration cycle in great reed warblers (Acrocephalus arundinaceus), a passerine bird breeding in Eurasia and wintering in

  16. Modelling the winter distribution of a rare and endangered migrant, the Aquatic Warbler Acrocephalus paludicola

    DEFF Research Database (Denmark)

    Walther, Bruno A; Schäffer, Norbert; van Niekerk, Adriaan

    2007-01-01

    . Such model predictions may be useful guidelines to focus further field research on the Aquatic Warbler. Given the excellent model predictions in this study, this novel technique may prove useful to model the distribution of other rare and endangered species, thus providing a means to guide future survey...

  17. Influences of wind flow on stopover decisions: the case of the reed warbler Acrocephalus scirpaceus in the Western Mediterranean

    Science.gov (United States)

    Barriocanal, C.; Montserrat, D.; Robson, D.

    2002-06-01

    Wind directions measured at two different heights (850 hPa and 700 hPa) and at different hours of the night were analysed during the spring migration passage at a bird stopover site located in the western Mediterranean, in order to evaluate the importance of wind components for a stopover decision. From a huge ringing campaign of bird migration in north-east Spain, data from the reed warbler Acrocephalus scirpaceus have been used for the analysis. From a total of 2,478 reed warblers captured between 1993 and 1997 data recording significant days, with a high number of captures, and decrease days, with few captures, have been selected to develop an analysis of wind direction in relation to stopover and flight resumption. On days with a high capture the winds had mainly a fourth-quadrant flow (from the north, north-west and west), these being mainly head winds. Winds with westerly component (from the north-west, west and south-west), which enhance the flight, account for the majority of the days when there was a low capture of reed warblers. Wind direction therefore appears to be a determining factor for stopover decisions and resumption of flight for the reed warblers at an intermediate stage of their spring migration where topographical characteristics govern the winds.

  18. Evaluation of a reproductive index for estimating songbird productivity: Case study of the golden-cheeked warbler

    Science.gov (United States)

    Jennifer L. Reidy; Lisa O' Donnell; Frank R. Thompson

    2015-01-01

    It is critically important to determine and understand relationships between endangered species populations and landscape and habitat features to effectively manage and conserve populations and the habitats they rely on. Several recent studies focused on the golden-cheeked warbler (Setophaga chrysoparia), an endangered songbird that breeds...

  19. Seasonal productivity and nest survival of Golden-cheeked Warblers vary with forest type and edge density

    Science.gov (United States)

    Rebecca G. Peak; Frank R., III Thompson

    2014-01-01

    Knowledge of the demography and habitat requirements of the endangered Golden-cheeked Warbler (Setophaga chrysoparia) is needed for its recovery, including measures of productivity instead of reproductive indices. We report on breeding phenology and demography, calculate model-based estimates of nest survival and seasonal productivity and evaluate...

  20. Microsatellite DNA markers for delineating population structure and kinship among the endangered Kirtland’s warbler (Dendroica kirtlandii)

    Science.gov (United States)

    TIM L. KING; MICHAEL S. EACKLES; ANNE P. HENDERSON; CAROL I. BOCETTI; DAVE CURRIE; JR WUNDERLE

    2005-01-01

    We document the isolation and characterization of 23 microsatellite DNA markers for the endangered Kirtland’s warbler (Dendroica kirtlandii), a Nearctic/Neotropical migrant passerine. This suite of markers revealed moderate to high levels of allelic diversity (averaging 7.7 alleles per locus) and heterozygosity (averaging 72%). Genotypic frequencies at 22 of 23 (95%)...

  1. Patterns of gene flow and selection across multiple species of Acrocephalus warblers: footprints of parallel selection on the Z chromosome

    Czech Academy of Sciences Publication Activity Database

    Reifová, R.; Majerová, V.; Reif, J.; Ahola, M.; Lindholm, A.; Procházka, Petr

    2016-01-01

    Roč. 16, č. 130 (2016), s. 130 ISSN 1471-2148 Institutional support: RVO:68081766 Keywords : Adaptive radiation * Speciation * Gene flow * Parallel adaptive evolution * Z chromosome * Acrocephalus warblers Subject RIV: EG - Zoology Impact factor: 3.221, year: 2016

  2. Population distribution, density and habitat preference of the Cerulean Warbler (Setophaga cerulea) in the Delaware Water Gap National Recreation Area

    Science.gov (United States)

    Shannon Curley; Terry Master; Gregory George

    2012-01-01

    The breeding range of the Cerulean Warbler has expanded into second-growth forest and converted agricultural land in the northeastern United States where, according to the North American Breeding Bird Survey, the population is increasing. Despite this expansion in one part of its range, the population as a whole is still in rapid decline implying that habitat quality...

  3. Advancing our understanding of the non-breeding distribution of Cerulean Warbler (Setophaga cerulea) in the Andes

    Science.gov (United States)

    Gabriel J. Colorado; Paul B. Hamel; Amanda D. Rodewald; David. Mehlman

    2012-01-01

    Recent population declines have prompted the International Union for the Conservation of Nature to list Cerulean Warbler (Setophaga cerulea: Parulidae) as a Vulnerable species. It is believed that this decline may be related to habitat loss through its entire range, mainly due to deforestation and degradation of its habitats. In response, members of...

  4. Harvest-related edge effects on prey availability and foraging of hooded warblers in a bottomland hardwood forest

    Science.gov (United States)

    John C. Kilgo

    2005-01-01

    The effects of harvest-created canopy gaps in bottomland hardwood forests on arthropod abundance and, hence, the foraging ecology of birds are poorly understood. I predicted that arthropod abundance would be high near edges of group-selection harvest gaps and lower in the surrounding forest, and that male Hooded Warblers (Wilsonia citrina) foraging...

  5. Male Kirtland's Warblers' patch-level response to landscape structure during periods of varying population size and habitat amounts

    Science.gov (United States)

    Deahn M. Donner; Christine A. Ribic; John R. Probst

    2009-01-01

    Forest planners must evaluate how spatiotemporal changes in habitat amount and configuration across the landscape as a result of timber management will affect species' persistence. However, there are few long-term programs available for evaluation. We investigated the response of male Kirtland's Warbler (Dendroica kirtlandii) to 26 years of...

  6. PROSPECT OF INDONESIA BLACK AND WHITE PEPPERS EXPORT

    Directory of Open Access Journals (Sweden)

    Tavi Supriana

    2013-04-01

    Full Text Available AbstractThis study analyzes the behavior of pepper exports, consisting of black pepper and white pepper, to various destination countries. The results of this study showed that black pepper exports affected by the destination country's gross domestic product (GDP, the price of white pepper, the population of the country of destination and the exchange rate against the dollar. Meanwhile, white pepper exports affected by the destination country's GDP, the population of the country of destination, the price of black pepper, white pepper prices and the exchange rate against the dollar. The results also showed that black pepper and white pepper are not mutually substituted.Keywords: pepper, exports, GDP, population, exchange rate JEL Classificaiton Numbers: F14, F19AbstrakPenelitian ini menganalisis perilaku ekspor lada, terdiri dari lada hitam dan lada putih, ke berbagai negara tujuan. Hasil penelitian ini menunjukkan bahwa ekspor lada hitam dipengaruhi oleh Pendapatan domestik bruto (PDB negara tujuan, harga lada putih, populasi negara tujuan dan nilai tukar rupiah terhadap dolar. Sementara itu, ekspor lada putih dipengaruhi oleh PDB negara tujuan, populasi negara tujuan, harga lada hitam, harga lada putih dan nilai tukar rupiah terhadap dolar. Hasil penelitian juga menunjukkan bahwa lada hitam dan lada putih tidak saling bersubstitusi.Keywords: Lada, ekspor, PDB, populasi, kursJEL Classificaiton Numbers: F14, F19

  7. Television and College Football: In Black and White

    Science.gov (United States)

    Braddock, Jomills Henry, II

    1978-01-01

    This article's basic aim is to examine empirical evidence bearing upon the question of the relative competitive superiority of the predominantly white Division I football teams over the predominantly black Division II teams. (Author)

  8. Black and White College Women's Perceptions of Sexual Harassment.

    Science.gov (United States)

    Shelton, J. Nicole; Chavous, Tabbye M.

    1999-01-01

    Examined how racial factors influence college women's perceptions of sexual harassment with samples of 46 black and 89 white women. Data suggest that sexual harassment between black women and black men is trivialized compared to sexual behavior between black women and white men. Discusses implications for the study of sexual harassment. (SLD)

  9. Color and uncertainty : It is not always black and white

    NARCIS (Netherlands)

    Tak, S.; Toet, A.

    2014-01-01

    To fully comprehend the meaning and impact of visualized data it is crucial that users are able to perceive and comprehend the inherent uncertainty of the data in a correct and intuitive way. Data uncertainty is frequently visualized through color mappings. Previous studies argued that color hue is

  10. Race, School, and Seinfeld: Autoethnographic Sketching in Black and White

    Science.gov (United States)

    Wamsted, John O.

    2011-01-01

    Applying the Deluzoguattarian concept of the trace, this article explores interactions between a White teacher and his Black students and the way race is coconstructed therein. Using a short story by the Argentine mystery writer Jorge Luis Borges as a frame, the author connects the poststructural philosophy of the trace to current notions of…

  11. Black and White Esophagus: Rare Presentations of Severe Esophageal Ischemia.

    Science.gov (United States)

    Kim, Daniel B; Bowers, Steven; Thomas, Mathew

    2017-01-01

    Benign esophageal strictures are typically the result of long-standing gastroesophageal reflux, and are usually treated with serial dilations and acid-suppressive therapy. Other causes of benign esophageal strictures include external beam radiation, caustic ingestions, prior surgery, and external compression from mediastinal fibrosis. We report 2 rare causes of ischemic esophageal structuring occurring after operations unrelated to the esophagus. The first is a patient who developed esophageal injury following radiofrequency ablation for atrial fibrillation. The direct thermal injury resulted in a "white esophagus" with a full-thickness, long-segmental stricture. The second patient presented with a "black esophagus" also known as acute necrotizing esophagitis. This occurred after an orthotopic liver transplant, which was complicated by multiple organ dysfunction secondary to hemorrhagic shock. In this report, we present 2 rare causes of esophageal stricturing that occurred after procedures not necessarily related to the esophagus itself. Early recognition and active management of these esophageal injuries may lead to better outcomes. Copyright © 2017 Elsevier Inc. All rights reserved.

  12. Measuring eating concerns in Black and White adolescent girls

    NARCIS (Netherlands)

    Franko, DL; Striegel-Moore, RH; Barton, BA; Schumann, BC; Garner, DM; Daniels, [No Value; Schreiber, GB; Crawford, PB

    Objective: Few instruments exist to measure eating concerns in adolescent girls from diverse ethnic backgrounds. Methods: A Children's version of the Eating Disorder Inventory (EDI-C) has been under development for several years and was designed to be more appropriate for younger children with lower

  13. In black and white: Media's role in shaping public opinion

    International Nuclear Information System (INIS)

    Choi Yearn-hong

    2004-01-01

    In a modern, democratic society, the newspaper's role is important and critical in shaping citizens' opinions on nuclear power and other issues. Citizens acquire knowledge on current issues in their society, nation, and the world through newspapers. Today, television and internet media is increasingly becoming more popular among citizens, but newspaper media continues to affect intellectual citizens, policy makers and think tanks. Therefore, assessing major daily newspaper editorials covering nuclear issues and affairs is necessary for their sound bridging between nuclear science and engineering and the public. Bridging the two cultures, science and humanities, is an enormous task for modern democratic society

  14. Black and White Adolescent Males' Perceptions of Ideal Body Size.

    Science.gov (United States)

    Thompson, Sharon H.; And Others

    1996-01-01

    Studied ideal body size beliefs of 337 white and 159 black adolescent males. Findings point toward a greater approval and social acceptance of a larger body size for black females by black males. Cultural differences may be a factor to consider in designing appropriate weight control programs. (SLD)

  15. Black and White Adolescent Females Perceptions of Ideal Body Size.

    Science.gov (United States)

    Parnell, Kathy; And Others

    1996-01-01

    White and black adolescent females (n=344) participated in a survey of ideal body size beliefs using a questionnaire and 9 female and male body size drawings. Black females preferred a significantly heavier ideal female body size than whites and perceived that their parents and friends would select as ideal a significantly heavier female body size…

  16. Friendships and Romantic Relationships of Black and White Adolescents

    Science.gov (United States)

    Pagano, Maria E.; Hirsch, Barton J.

    2007-01-01

    Prior research on adolescent peer relationships has focused on interpersonal dimensions of friendships but not of romantic relationships, and has rarely examined minority groups. We used a random sample of 122 adolescents to examine race and gender differences in friendships, romantic relationships, and the congruence between closest friendship…

  17. Prevalence ofhyaline membrane disease in black and white low ...

    African Journals Online (AJOL)

    one of white low-birth-weight infants were en- rolled at Baragwanath and Johannesburg Hospi- ... The prevalence of respiratory distress caused by hyaline membrane dis·ease (HMD) in pre- .... ticoid treatment for prevention of the respiratory distress syndrome in premarure infants. Pediamcs 1972; 50: 515-825. 12.

  18. Complete mitochondrial genome of Yellow-browed warbler Phylloscopus inornatus inornatus (Passeriformes: Sylviidae).

    Science.gov (United States)

    Qing, Hui; Liu, Gang; Zhou, Lizhi; Wang, Jinghua; Li, Lunyue; Li, Bo; Olsson, Urban

    2015-01-01

    Yellow-browed warbler Phylloscopus inornatus inornatus (Passeriformes: Sylviidae) is a small insectivorous leaf-gleaning bird which breeds in forests of the east Palaearctic. In this study, we used PCR-based method to determine the complete mitochondrial genome (mtDNA) of this warbler species. The complete mtDNA is a 16,875 bp circular molecule, containing 37 typical genes and an extra pseudo-control region. The gene order differs from the standard gene order in birds, but similar to genus Sylvia and Acrocephalus, which has the remnant CR2 gene order. All protein-coding genes start with a typical ATG codon. The termination codon is usually the standard TAA, but may be TAG (Cyt b and ND6), AGG (COI) or incomplete T-(COIII and ND4). All tRNAs have the typical clover-leaf structure, except the dihydrouridine (DHU) arm of tRNASer (AGN) and tRNALys (CUN), which forms a simple loop. The non-coding region contains some intergenic spacers, a control region and an extra pseudo-control region.

  19. MHC-based patterns of social and extra-pair mate choice in the Seychelles warbler

    Science.gov (United States)

    Richardson, David S; Komdeur, Jan; Burke, Terry; von Schantz, Torbjörn

    2005-01-01

    The existence and nature of indirect genetic benefits to mate choice remain contentious. Major histocompatibility complex (MHC) genes, which play a vital role in determining pathogen resistance in vertebrates, may be the link between mate choice and the genetic inheritance of vigour in offspring. Studies have shown that MHC-dependent mate choice can occur in mammal and fish species, but little work has focused on the role of the MHC in birds. We tested for MHC-dependent mating patterns in the Seychelles warbler (Acrocephalus sechellensis). There was no influence of MHC class I exon 3 variation on the choice of social mate. However, females were more likely to obtain extra-pair paternity (EPP) when their social mate had low MHC diversity, and the MHC diversity of the extra-pair male was significantly higher than that of the cuckolded male. There was no evidence that females were mating disassortatively, or that they preferred males with an intermediate number of MHC bands. Overall, the results are consistent with the ‘good genes’ rather than the ‘genetic compatibility’ hypothesis. As female choice will result in offspring of higher MHC diversity, MHC-dependent EPP may provide indirect benefits in the Seychelles warbler if survival is positively linked to MHC diversity. PMID:15870038

  20. Social pairing of Seychelles warblers under reduced constraints: MHC, neutral heterozygosity, and age.

    Science.gov (United States)

    Wright, David J; Brouwer, Lyanne; Mannarelli, Maria-Elena; Burke, Terry; Komdeur, Jan; Richardson, David S

    2016-01-01

    The prevalence and significance of precopulatory mate choice remains keenly debated. The major histocompatibility complex (MHC) plays a key role in vertebrate adaptive immunity, and variation at the MHC influences individual survival. Although MHC-dependent mate choice has been documented in certain species, many other studies find no such pattern. This may be, at least in part, because in natural systems constraints may reduce the choices available to individuals and prevent full expression of underlying preferences. We used translocations to previously unoccupied islands to experimentally reduce constraints on female social mate choice in the Seychelles warbler ( Acrocephalus sechellensis ), a species in which patterns of MHC-dependent extrapair paternity (EPP), but not social mate choice, have been observed. We find no evidence of MHC-dependent social mate choice in the new populations. Instead, we find that older males and males with more microsatellite heterozygosity are more likely to have successfully paired. Our data cannot resolve whether these patterns in pairing were due to male-male competition or female choice. However, our research does suggest that female Seychelles warblers do not choose social mates using MHC class I to increase fitness. It may also indicate that the MHC-dependent EPP observed in the source population is probably due to mechanisms other than female precopulatory mate choice based on MHC cues.

  1. Radio-transmitters do not affect seasonal productivity of female Golden-winged Warblers

    Science.gov (United States)

    Streby, Henry M.; Peterson, Sean M.; Gesmundo, Callie; Johnson, Michael K.; Fish, Alexander C.; Lehman, Justin A.; Andersen, David E.

    2013-01-01

    Investigating the potential effects of handling and marking techniques on study animals is important for correct interpretation of research results and to effect progress in data-collection methods. Few investigators have compared the reproductive output of radio-tagged and non-radio-tagged songbirds, and no one to date has examined the possible effect of radio-tagging adult songbirds on the survival of their fledglings. In 2011 and 2012, we compared several parameters of reproductive output of two groups of female Golden-winged Warblers (Vermivora chrysoptera) breeding in Minnesota, including 45 females with radio-transmitters and 73 females we did not capture, handle, or mark. We found no difference between groups in clutch sizes, hatching success, brood sizes, length of incubation and nestling stages, fledging success, number of fledglings, or survival of fledglings to independence. Thus, radio-tags had no measurable impact on the productivity of female Golden-winged Warblers. Our results build upon previous studies where investigators have reported no effects of radio-tagging on the breeding parameters of songbirds by also demonstrating no effect of radio-tagging through the post-fledging period and, therefore, the entire breeding season.

  2. Simulating range-wide population and breeding habitat dynamics for an endangered woodland warbler in the face of uncertainty

    Science.gov (United States)

    Adam Duarte,; Hatfield, Jeffrey; Todd M. Swannack,; Michael R. J. Forstner,; M. Clay Green,; Floyd W. Weckerly,

    2015-01-01

    Population viability analyses provide a quantitative approach that seeks to predict the possible future status of a species of interest under different scenarios and, therefore, can be important components of large-scale species’ conservation programs. We created a model and simulated range-wide population and breeding habitat dynamics for an endangered woodland warbler, the golden-cheeked warbler (Setophaga chrysoparia). Habitat-transition probabilities were estimated across the warbler's breeding range by combining National Land Cover Database imagery with multistate modeling. Using these estimates, along with recently published demographic estimates, we examined if the species can remain viable into the future given the current conditions. Lastly, we evaluated if protecting a greater amount of habitat would increase the number of warblers that can be supported in the future by systematically increasing the amount of protected habitat and comparing the estimated terminal carrying capacity at the end of 50 years of simulated habitat change. The estimated habitat-transition probabilities supported the hypothesis that habitat transitions are unidirectional, whereby habitat is more likely to diminish than regenerate. The model results indicated population viability could be achieved under current conditions, depending on dispersal. However, there is considerable uncertainty associated with the population projections due to parametric uncertainty. Model results suggested that increasing the amount of protected lands would have a substantial impact on terminal carrying capacities at the end of a 50-year simulation. Notably, this study identifies the need for collecting the data required to estimate demographic parameters in relation to changes in habitat metrics and population density in multiple regions, and highlights the importance of establishing a common definition of what constitutes protected habitat, what management goals are suitable within those protected

  3. Hatchling sex ratio and female mating status in the great reed warbler, Acrocephalus arundinaceus (Aves, Passeriformes): further evidence for offspring sex ratio manipulation

    Czech Academy of Sciences Publication Activity Database

    Trnka, A.; Prokop, P.; Kašová, M.; Sobeková, Karolina; Kocian, Ľ.

    2012-01-01

    Roč. 79, č. 2 (2012), s. 212-217 ISSN 1125-0003 Institutional support: RVO:68081766 Keywords : Great reed warbler * sex ratio * social polygyny Subject RIV: EG - Zoology Impact factor: 0.890, year: 2012

  4. Connecting the dots: Stopover strategies of an intercontinental migratory songbird in the context of the annual cycle.

    Science.gov (United States)

    Paxton, Kristina L; Moore, Frank R

    2017-09-01

    The phases of the annual cycle for migratory species are inextricably linked. Yet, less than five percent of ecological studies examine seasonal interactions. In this study, we utilized stable hydrogen isotopes to geographically link individual black-and-white warblers ( Mniotilta varia) captured during spring migration with breeding destinations to understand a migrant's stopover strategy in the context of other phases of the annual cycle. We found that stopover strategy is not only a function of a bird's current energetic state, but also the distance remaining to breeding destination and a bird's time-schedule, which has previously been linked to habitat conditions experienced in the preceding phase of the annual cycle. Birds in close proximity to their breeding destination accumulate additional energy reserves prior to arrival on the breeding grounds, as reflected by higher migratory condition upon arrival, higher refueling rates measured via blood plasma metabolites, and longer stopover durations compared to birds migrating to breeding destinations farther from the stopover site. However, late birds near their breeding destination were more likely to depart on the day of arrival (i.e., transients), and among birds that stopped over at the site, the average duration of stopover was almost half the time of early conspecifics, suggesting late birds are trying to catch-up with the overall time-schedule of migration for optimal arrival time on the breeding grounds. In contrast, birds with long distances remaining to breeding destinations were more likely to depart on the day of arrival and primarily used stopover to rest before quickly resuming migration, adopting similar strategies regardless of a bird's time-schedule. Our study demonstrates that migrants adjust their en route strategies in relation to their time-schedule and distance remaining to their breeding destination, highlighting that strategies of migration should be examined in the context of other phases

  5. Autumn phenology and morphometrics in the Garden Warbler Sylvia borin at the Ottenby Bird Observatory, Sweden

    DEFF Research Database (Denmark)

    Iwajomo, Soladoye B.; Hedenström, Anders; Ottosson, Ulf

    2012-01-01

    Trapping and ringing near ecological barriers can provide useful information about the migration strategies of bird species. In this paper we analyzed ringing data of the Garden Warbler, collected within the period of 1950-2008 at the Ottenby Bird Observatory, south-eastern Sweden, and describe...... patterns in migration phenology, morphometrics and fuel load. A total of 4,351 individuals aged as either adults or juveniles were ringed during the period (yearly averages 7.3 adults and 83.1 juveniles) in addition to 1,514 birds of unknown age. Both age-specific and combined yearly totals did...... not significantly vary over the years. Median passage dates were 24 August, 30 August and 2 September for adults, juveniles and birds of unknown age, respectively. Median passage did not change significantly over the years. Among adults, larger individuals passed the observatory earlier than smaller individuals...

  6. Territory tenure increases with repertoire size in brownish-flanked bush warbler.

    Directory of Open Access Journals (Sweden)

    Canwei Xia

    Full Text Available Song repertoire size is often cited as a classic example of a secondary sexual trait in birds. Models of sexual selection and empirical tests of their predictions have often related secondary sexual traits to longevity. However, the relationship between repertoire size and longevity is unclear. Using capture-mark-recapture studies in two populations of the brownish-flanked bush warbler Cettia fortipes, we found that males with a repertoire size of three maintained territory tenure for a longer duration than did males with a repertoire size of two. These results provide evidence that even a minimal difference in repertoire size can serve as a potential signal of territory tenure capability.

  7. Differential timing and latitudinal variation in sex ratio of Aquatic Warblers during the autumn migration

    Science.gov (United States)

    Wojczulanis-Jakubas, Katarzyna; Chrostek, Małgorzata E.; Jiguet, Frédéric; Martínez, Carlos Zumalacárregui; Miguélez, David; Neto, Júlio M.

    2017-12-01

    Differential migration has been extensively reported in spring, but less so in autumn, particularly in relation to sex in monomorphic bird species. Here, we analysed the autumn passage of a monomorphic, globally threatened passerine, the Aquatic Warbler Acrocephalus paludicola throughout Western Europe, with regard to age and sex. We showed that, overall, adults migrated earlier than first-year birds, and males migrated earlier than females during the autumn migration. This may be caused by an overall social dominance of adults over immatures, and differentiated migration strategy of males and females. In addition, we found male-skewed sex proportions, with a tendency to an equalised ratio in more southern stopover sites. This may indicate a male bias in the global population or different migration strategies of the sexes. Differential migration may cause the age and sex classes to be exposed differently to various threats affecting demographic structure of the species.

  8. Allelic variation in a willow warbler genomic region is associated with climate clines.

    Directory of Open Access Journals (Sweden)

    Keith W Larson

    Full Text Available Local adaptation is an important process contributing to population differentiation which can occur in continuous or isolated populations connected by various amounts of gene flow. The willow warbler (Phylloscopus trochilus is one of the most common songbirds in Fennoscandia. It has a continuous breeding distribution where it is found in all forested habitats from sea level to the tree line and therefore constitutes an ideal species for the study of locally adapted genes associated with environmental gradients. Previous studies in this species identified a genetic marker (AFLP-WW1 that showed a steep north-south cline in central Sweden with one allele associated with coastal lowland habitats and the other with mountainous habitats. It was further demonstrated that this marker is embedded in a highly differentiated chromosome region that spans several megabases. In the present study, we sampled 2,355 individuals at 128 sites across all of Fennoscandia to study the geographic and climatic variables associated with the allele frequency distributions of WW1. Our results demonstrate that 1 allele frequency patterns significantly differ between mountain and lowland populations, 2 these allele differences coincide with extreme temperature conditions and the short growing season in the mountains, and milder conditions in coastal areas, and 3 the northern-allele or "altitude variant" of WW1 occurs in willow warblers that occupy mountainous habitat regardless of subspecies. Finally these results suggest that climate may exert selection on the genomic region associated with these alleles and would allow us to develop testable predictions for the distribution of the genetic marker based on climate change scenarios.

  9. Isospora cardellinae n. sp. (Apicomplexa: Eimeriidae) from the red warbler Cardellina rubra (Swainson) (Passeriformes: Parulidae) in Mexico.

    Science.gov (United States)

    Salgado-Miranda, Celene; Medina, Juan Pablo; Zepeda-Velázquez, Andrea Paloma; García-Conejo, Michele; Galindo-Sánchez, Karla Patricia; Janczur, Mariusz Krzysztof; Soriano-Vargas, Edgardo

    2016-10-01

    A new coccidian species (Protozoa: Apicomplexa: Eimeriidae) collected from the red warbler Cardellina rubra (Swainson) is reported from the Nevado de Toluca National Park, Mexico. Isospora cardellinae n. sp. has subspherical oöcysts, measuring on average 26.6 × 25.4 μm, with smooth, bi-layered wall, c.1.3 μm thick. Micropyle, oöcyst residuum, and polar granule are absent. Sporocysts are ovoidal, measuring on average 19.0 × 12.0 µm, with a knob-like Stieda body, a trapezoidal sub-Stieda body and sporocyst residuum composed of scattered spherules of different sizes. Sporozoites are vermiform with one refractile body and a nucleus. This is the fourth description of an isosporoid coccidian infecting a New World warbler.

  10. Isospora celata n. sp. (Apicomplexa: Eimeriidae) from the orange-crowned warbler Oreothlypis celata (Say) (Passeriformes: Parulidae) in Mexico.

    Science.gov (United States)

    Berto, Bruno Pereira; Medina, Juan Pablo; Salgado-Miranda, Celene; García-Conejo, Michele; Janczur, Mariusz Krzysztof; Lopes, Carlos Wilson Gomes; Soriano-Vargas, Edgardo

    2014-11-01

    A new coccidian species (Protista: Apicomplexa: Eimeriidae) is described from the orange-crowned warbler Oreothlypis celata (Say) collected in the Nevado de Toluca National Park, Mexico at 3,000 metres above sea level. Isospora celata n. sp. has subspheroidal oöcysts, measuring 28.4 × 26.4 μm, with smooth, bi-layered wall c.1.2 μm thick. Micropyle and polar granule are absent, but oöcyst residuum is present as a compact mass. Sporocysts are ovoidal, 18.2 × 12.8 µm. Stieda body knob-like and sub-Stieda body irregular and barely discernible. Sporocyst residuum is composed of granules of different sizes. Sporozoites are vermiform with one refractile body and a nucleus. This is the third description of an isosporoid coccidian infecting a New World warbler.

  11. Hooded-Warbler Nesting Success Adjacent to Group-Selection and Clearcut Edges in a Southeastern Bottomland Forest

    Energy Technology Data Exchange (ETDEWEB)

    Moorman, C.E.; Guynn, D.C., Jr.; Kilgo, J.C.

    2002-01-11

    Location and monitoring of Hooded-Warbler nests in a bottomland forest and examined the effects of edge proximity, edge type and nest-site vegetation on nesting success. Probability of parasitism by Brown-headed cowbirds was higher near clearcut edges and parasitism reduced clutch-size and numbers of fledglings per successful nest. Study was conducted in a primarily forested landscape, so cowbird abundance or negative edge effects may have been low relative to agricultural landscapes in the South.

  12. Variables associated with nest survival of Golden-winged Warblers (Vermivora chrysoptera) among vegetation communities commonly used for nesting

    Science.gov (United States)

    Aldinger, Kyle R.; Terhune, Theron M.; Wood, Petra Bohall; Buehler, David A.; Bakermans, Marja H.; Confer,  John L.; Flaspohler, David J.; Larkin, Jeffrey L.; Loegering, John P.; Percy, Katie L.; Roth, Amber M.; Smalling, Curtis G.

    2015-01-01

    Among shrubland- and young forest-nesting bird species in North America, Golden-winged Warblers (Vermivora chrysoptera) are one of the most rapidly declining partly because of limited nesting habitat. Creation and management of high quality vegetation communities used for nesting are needed to reduce declines. Thus, we examined whether common characteristics could be managed across much of the Golden-winged Warbler’s breeding range to increase daily survival rate (DSR) of nests. We monitored 388 nests on 62 sites throughout Minnesota, Wisconsin, New York, North Carolina, Pennsylvania, Tennessee, and West Virginia. We evaluated competing DSR models in spatial-temporal (dominant vegetation type, population segment, state, and year), intraseasonal (nest stage and time-within-season), and vegetation model suites. The best-supported DSR models among the three model suites suggested potential associations between daily survival rate of nests and state, time-within-season, percent grass and Rubus cover within 1 m of the nest, and distance to later successional forest edge. Overall, grass cover (negative association with DSR above 50%) and Rubus cover (DSR lowest at about 30%) within 1 m of the nest and distance to later successional forest edge (negative association with DSR) may represent common management targets across our states for increasing Golden-winged Warbler DSR, particularly in the Appalachian Mountains population segment. Context-specific adjustments to management strategies, such as in wetlands or areas of overlap with Blue-winged Warblers (Vermivora cyanoptera), may be necessary to increase DSR for Golden-winged Warblers.

  13. Antiparasite behaviour in response to experimental brood parasitism in the great reed warbler: a comparison of single and multiple parasitism

    Czech Academy of Sciences Publication Activity Database

    Honza, Marcel; Moskát, C.

    2005-01-01

    Roč. 42, c. 6 (2005), s. 627-633 ISSN 0003-455X R&D Projects: GA ČR(CZ) GA206/00/P046; GA AV ČR(CZ) IAA6093203 Institutional research plan: CEZ:AV0Z60930519 Keywords : avian brood parasitism * Acrocephalus warblers Subject RIV: EG - Zoology Impact factor: 0.992, year: 2005 http://www.sekj.org/PDF/anz42-free/anz42-627.pdf

  14. Habitat selection and ecological speciation in Galápagos warbler finches (Certhidea olivacea and Certhidea fusca).

    Science.gov (United States)

    Tonnis, Brandon; Grant, Peter R; Grant, B Rosemary; Petren, Kenneth

    2005-04-22

    We investigated phylogeographic divergence among populations of Galápagos warble finches. Their broad distribution, lack of phenotypic differentiation and low levels of genetic divergence make warbler finches an appropriate model to study speciation in allopatry. A positive relationship between genetic and geographical distance is expected for island taxa. Warbler finches actually showed a negative isolation by distance relationship, causing us to reject the hypothesis of distance-limited dispersal. An alternative hypothesis, that dispersal is limited by habitat similarity, was supported. We found a positive correlation between genetic distances and differences in maximum elevation among islands, which is an indicator of ecological similarity. MtDNA sequence variation revealed monophyletic support for two distinct species. Certhidea olivacea have recently dispersed among larger central islands, while some Certhidea fusca have recently dispersed to small islands at opposite ends of the archipelago. We conclude that females have chosen to breed on islands with habitats similar to their natal environment. Habitat selection is implicated as an important component of speciation of warbler finches, which is the earliest known divergence of the adaptive radiation of Darwin's finches. These results suggest that small populations can harbour cryptic but biologically meaningful variation that may affect longer term evolutionary processes.

  15. Evolutionary dynamics of Rh2 opsins in birds demonstrate an episode of accelerated evolution in the New World warblers (Setophaga).

    Science.gov (United States)

    Bloch, Natasha I; Price, Trevor D; Chang, Belinda S W

    2015-05-01

    Low rates of sequence evolution associated with purifying selection can be interrupted by episodic changes in selective regimes. Visual pigments are a unique system in which we can investigate the functional consequences of genetic changes, therefore connecting genotype to phenotype in the context of natural and sexual selection pressures. We study the RH2 and RH1 visual pigments (opsins) across 22 bird species belonging to two ecologically convergent clades, the New World warblers (Parulidae) and Old World warblers (Phylloscopidae) and evaluate rates of evolution in these clades along with data from 21 additional species. We demonstrate generally slow evolution of these opsins: both Rh1 and Rh2 are highly conserved across Old World and New World warblers. However, Rh2 underwent a burst of evolution within the New World genus Setophaga, where it accumulated substitutions at 6 amino acid sites across the species we studied. Evolutionary analyses revealed a significant increase in dN /dS in Setophaga, implying relatively strong selective pressures to overcome long-standing purifying selection. We studied the effects of each substitution on spectral tuning and found they do not cause large spectral shifts. Thus, substitutions may reflect other aspects of opsin function, such as those affecting photosensitivity and/or dark-light adaptation. Although it is unclear what these alterations mean for colour perception, we suggest that rapid evolution is linked to sexual selection, given the exceptional plumage colour diversification in Setophaga. © 2015 John Wiley & Sons Ltd.

  16. Reed warbler orientation: initiation of nocturnal migratory flights in relation to visibility of celestial cues at dusk.

    Science.gov (United States)

    Åkesson, S.; Walinder, G.; Karlsson, L.; Ehnbom, S.

    2001-01-01

    We used radiotelemetry to investigate the time of migratory flight initiation relative to available celestial orientation cues and departure direction of a nocturnal passerine migrant, the reed warbler, Acrocephalus scirpaceus, during autumn migration. The study was carried out at Falsterbo, a coastal site in southwest Sweden. The warblers initiated migration from times well after local sunset and well into the night, corresponding to sun elevations between -4 degrees and -35 degrees, coinciding with the occurrence of stars at night. They departed in the expected migratory direction towards south of southwest with a few initiating migration in reverse directions towards northeast to east. Flight directions under overcast conditions (7-8/8) were more scattered than under clear sky conditions (0-4/8). There were fewer clouds on departure nights than on nights when the birds did not initiate migration. For birds staying longer than one night at stopover the horizontal visibility was higher and precipitation was less likely on departure nights than on the previous night. The results show that the visibility of celestial cues, and stars in particular, are important for the decision to initiate migration in reed warblers. However, cloud cover, horizontal visibility and precipitation might be correlated with other weather variables (i.e. wind or air pressure) that are also likely to be important for the decision to migrate. Copyright 2001 The Association for the Study of Animal Behaviour.

  17. Harvest-related edge effects on prey availability and foraging of hooded warblers in a bottomland hardwood forest.

    Energy Technology Data Exchange (ETDEWEB)

    John Kilgo

    2005-04-20

    The effects of harvest-created canopy gaps in bottomland hardwood forests on arthropod abundance and, hence, the foraging ecology of birds are poorly understood. I predicted that arthropod abundance would be high near edges of group-selection harvest gaps and lower in the surrounding forest, and that male Hooded Warblers (Wilsonia citrina) foraging near gaps would find more prey per unit time than those foraging in the surrounding forest. In fact, arthropod abundance was greater >100 m from a gap edge than at 0-30 m or 30-100 m from an edge, due to their abundance on switchcane (Arundinaria gigantea); arthropods did not differ in abundance among distances from gaps on oaks (Quercus spp.) or red maple (Acer rubrum). Similarly, Hooded Warbler foraging attack rates were not higher near gap edges: when foraging for fledglings, attack rate did not differ among distances from gaps, but when foraging for themselves, attack rates actually were lower 0-30 m from gap edges than 30-100 m or >100 m from a gap edge. Foraging attack rate was positively associated with arthropod abundance. Hooded Warblers apparently encountered fewer prey and presumably foraged less efficiently where arthropods were least abundant, i.e., near gaps. That attack rates among birds foraging for fledglings were not affected by distance from gap (and hence arthropod abundance) suggests that prey availability may not be limiting at any location across the forest, despite the depressing effects of gaps on arthropod abundance.

  18. Parasitic infection and oxidative status are associated and vary with breeding activity in the Seychelles warbler

    Science.gov (United States)

    van de Crommenacker, Janske; Richardson, David S.; Koltz, Amanda M.; Hutchings, Kimberly; Komdeur, Jan

    2012-01-01

    Parasites can have detrimental effects on host fitness, and infection typically results in the stimulation of the immune system. While defending against infection, the immune system generates toxic oxidants; if these are not sufficiently counteracted by the antioxidant system, a state of oxidative stress can occur. Here, we investigated the relationship between parasitic infection—using malarial infection as a model—and oxidative status in a natural population of the Seychelles warbler, while taking into account potentially interacting environmental covariates. We found that malaria is associated with increased susceptibility to oxidative stress, but this depends on the breeding stage: only during the energetically demanding provisioning stage did infected birds have higher oxidative stress susceptibility than non-infected birds. The imbalance in oxidative status was caused by a marked increase in oxidant levels observed only in infected birds during provisioning and by an overall reduction in antioxidant capacity observed in all birds across the breeding cycle. This finding implies that higher workload while dealing with an infection could aggravate oxidative repercussions. Malarial infection was not associated with body condition loss, suggesting that even when conditional effects are not directly visible, detrimental effects may still manifest themselves over the longer term through the oxidative consequences. PMID:22048952

  19. [Nest habitat quality evaluation for the oriental great reed warbler (Acrocephalus orientalis) in Baiyangdian Wetland].

    Science.gov (United States)

    Zhao, Zhi-Xuan; Yan, Deng-Hua; Geng, Lei-Hua; Lin, Jin; Feng, Hua-Li

    2014-05-01

    The Baiyangdian Wetland Natural Reserve is an important breeding habitat for oriental great reed warbler (OGRWs), Acrocephalus orientalis, in North China Plain. We investigated the nesting sites of OGRWs by line transect method during June-July, 2011, and 112 nests were found out in total. The ecological-niche factor analysis (ENFA) was applied in nesting habitat suitability assessment for OGRWs in Baiyangdian. The results showed that OGRWs in this reserve preferred nesting in dry land reed landscapes, which located at relatively high altitudes and away from anthropocentric disturbance. In 2011, the suitable and the most suitable nesting habitats of OGRWs in this reserve were 2474.69 hm2 and 1131.19 hm2, accounting 7.6% and 3.5% of the total reserve area, respectively. The most suitable nesting habitats shaped a circle-like structure, and they all clustered together around Damai and Shaoche core area, which located in the east part of the reserve. In order to protect the nesting habitats for OGRWs within Baiyangdian wetland reserve, it was suggested that the functional zone should be reorganized, and that the Damai and Shaoche core area should be integrated into one. This new core area would be bigger and more concentrated, at the same time the buffer zone should also be established appropriately, so as to protect the natural landscapes in this reserve as much as possible.

  20. Seasonal patterns of singing in the willow warbler: evidence against the fertility announcement hypothesis.

    Science.gov (United States)

    Gil; Graves; Slater

    1999-11-01

    Males of many bird species use a variety of behaviour patterns that reduce their chances of being cuckolded. The 'fertility announcement' hypothesis (Møller 1991, American Naturalist, 138, 994-1014) proposes that song might be one such paternity guard. According to this hypothesis, paired males would announce their female's fertile status by singing. This has been interpreted as an honest signalling, evolutionarily stable strategy. Contrary to the predictions of this hypothesis, male willow warblers, Phylloscopus trochilus, sang very little when females were fertile. Intrusions by other males in the fertile period were not less common when males sang at higher rates. Mate guarding and singing are best interpreted as two conflicting behaviours during this period, the former being directed to the fertile female and the latter to attracting a second female, or an extrapair female. A survey of recent studies suggests that, in most passerine species studied, males do not sing during the fertile period of their females. The different conclusions of Møller (1991) are probably due to his use of population-wide estimates of the timing of singing behaviour and egg laying. Breeding asynchronies within populations would be responsible for the apparent matching between the peaks of singing activity and fertility. Copyright 1999 The Association for the Study of Animal Behaviour.

  1. Host intra-clutch variation, cuckoo egg matching and egg rejection by great reed warblers.

    Science.gov (United States)

    Cherry, Michael I; Bennett, Andrew T D; Moskát, Csaba

    2007-06-01

    Prevailing theory predicts that lower levels of intra-clutch variation in host eggs facilitate the detection of brood parasitism. We assessed egg matching using both human vision and UV-VIS spectrophotometry and then followed the nest fate of great reed warblers naturally parasitised by European cuckoos. Rejection was predicted by the following three variables: matching between cuckoo and host eggs on the main chromatic variable defined by principal components analysis of the egg spectra (which has a strong loading in the UV); the number of host eggs in the nest; and human estimates of intra-clutch variation. The first variable is not correlated to human estimates of matching, which do not predict rejection. In line with another recent study, rejection rates were predicted by higher levels of intra-clutch variation in the host eggs, suggesting that higher rather than lower levels of intra-clutch variation can facilitate the discrimination of cuckoo eggs by hosts. We suggest that the importance of intra-clutch variation is context dependent, with intra-clutch variation being important when there is good matching between the host and the cuckoo eggs. Our results also suggest that both spectrometric and human visual assessments of egg matching and intra-clutch variation are prudent: the former provide the best method of estimating reflectance variation, whereas the latter include some assessment of patterns of maculation.

  2. Warm springs, early lay dates, and double brooding in a North American migratory songbird, the black-throated blue warbler.

    Directory of Open Access Journals (Sweden)

    Andrea K Townsend

    Full Text Available Numerous studies have correlated the advancement of lay date in birds with warming climate trends, yet the fitness effects associated with this phenological response have been examined in only a small number of species. Most of these species--primarily insectivorous cavity nesters in Europe--exhibit fitness declines associated with increasing asynchrony with prey. Here, we use 25 years of demographic data, collected from 1986 to 2010, to examine the effects of spring temperature on breeding initiation date, double brooding, and annual fecundity in a Nearctic-Neotropical migratory songbird, the black-throated blue warbler (Setophaga caerulescens. Data were collected from birds breeding at the Hubbard Brook Experimental Forest, New Hampshire, USA, where long-term trends toward warmer springs have been recorded. We found that black-throated blue warblers initiated breeding earlier in warmer springs, that early breeders were more likely to attempt a second brood than those starting later in the season, and that double brooding and lay date were linked to higher annual fecundity. Accordingly, we found selection favored earlier breeding in most years. However, in contrast to studies of several other long-distance migratory species in Europe, this selection pressure was not stronger in warmer springs, indicating that these warblers were able to adjust mean lay date appropriately to substantial inter-annual variation in spring temperature. Our results suggest that this North American migratory songbird might not experience the same fecundity declines as songbirds that are unable to adjust their timing of breeding in pace with spring temperatures.

  3. Emulating Natural Disturbances for Declining Late-Successional Species: A Case Study of the Consequences for Cerulean Warblers (Setophaga cerulea)

    Science.gov (United States)

    Boves, Than J.; Buehler, David A.; Sheehan, James; Wood, Petra Bohall; Rodewald, Amanda D.; Larkin, Jeffrey L.; Keyser, Patrick D.; Newell, Felicity L.; George, Gregory A.; Bakermans, Marja H.; Evans, Andrea; Beachy, Tiffany A.; McDermott, Molly E.; Perkins, Kelly A.; White, Matthew; Wigley, T. Bently

    2013-01-01

    Forest cover in the eastern United States has increased over the past century and while some late-successional species have benefited from this process as expected, others have experienced population declines. These declines may be in part related to contemporary reductions in small-scale forest interior disturbances such as fire, windthrow, and treefalls. To mitigate the negative impacts of disturbance alteration and suppression on some late-successional species, strategies that emulate natural disturbance regimes are often advocated, but large-scale evaluations of these practices are rare. Here, we assessed the consequences of experimental disturbance (using partial timber harvest) on a severely declining late-successional species, the cerulean warbler (Setophaga cerulea), across the core of its breeding range in the Appalachian Mountains. We measured numerical (density), physiological (body condition), and demographic (age structure and reproduction) responses to three levels of disturbance and explored the potential impacts of disturbance on source-sink dynamics. Breeding densities of warblers increased one to four years after all canopy disturbances (vs. controls) and males occupying territories on treatment plots were in better condition than those on control plots. However, these beneficial effects of disturbance did not correspond to improvements in reproduction; nest success was lower on all treatment plots than on control plots in the southern region and marginally lower on light disturbance plots in the northern region. Our data suggest that only habitats in the southern region acted as sources, and interior disturbances in this region have the potential to create ecological traps at a local scale, but sources when viewed at broader scales. Thus, cerulean warblers would likely benefit from management that strikes a landscape-level balance between emulating natural disturbances in order to attract individuals into areas where current structure is

  4. The Effects of Supplementary Food on the Breeding Performance of Eurasian Reed Warblers Acrocephalus scirpaceus; Implications for Climate Change Impacts.

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    James O Vafidis

    Full Text Available Understanding the mechanisms by which climate variation can drive population changes requires information linking climate, local conditions, trophic resources, behaviour and demography. Climate change alters the seasonal pattern of emergence and abundance of invertebrate populations, which may have important consequences for the breeding performance and population change of insectivorous birds. In this study, we examine the role of food availability in driving behavioural changes in an insectivorous migratory songbird; the Eurasian reed warbler Acrocephalus scirpaceus. We use a feeding experiment to examine the effect of increased food supply on different components of breeding behaviour and first-brood productivity, over three breeding seasons (2012-2014. Reed warblers respond to food-supplementation by advancing their laying date by up to 5.6 days. Incubation periods are shorter in supplemented groups during the warmest mean spring temperatures. Nestling growth rates are increased in nests provisioned by supplemented parents. In addition, nest predation is reduced, possibly because supplemented adults spend more time at the nest and faster nestling growth reduces the period of vulnerability of eggs and nestlings to predators (and brood parasites. The net effect of these changes is to advance the fledging completion date and to increase the overall productivity of the first brood for supplemented birds. European populations of reed warblers are currently increasing; our results suggest that advancing spring phenology, leading to increased food availability early in the breeding season, could account for this change by facilitating higher productivity. Furthermore, the earlier brood completion potentially allows multiple breeding attempts. This study identifies the likely trophic and behavioural mechanisms by which climate-driven changes in invertebrate phenology and abundance may lead to changes in breeding phenology, nest survival and net

  5. Long-distance Dispersal Patterns of Male Cerulean Warblers (Dendroica cerulea Measured by Stable-hydrogen Isotopes

    Directory of Open Access Journals (Sweden)

    M. Katherine. Girvan

    2007-12-01

    Full Text Available Despite the fundamental role played by long-distance dispersal in population dynamics, the mechanisms promoting or inhibiting dispersal by migratory songbirds are poorly understood. We used stable-hydrogen isotopes (δD to evaluate several hypotheses related to long-distance dispersal in the Cerulean Warbler (Dendroica cerulea, a migratory songbird at the center of considerable conservation attention. Feather samples were collected from 103 males throughout the breeding range. We assumed feathers were molted in late summer on the breeding grounds and thus δD values provided an estimate of breeding or hatching location for the previous year. We used a likelihood-based assignment test to estimate the origin of birds the previous year and derived expected δD values for the entire Cerulean Warbler breeding range from precipitation-based maps. Using Bayes' Rule, we also incorporated a prior probability of breeding origin based on estimated rates of site fidelity and survival between breeding seasons. We found that long-distance breeding dispersal by adult male Cerulean Warblers was a fairly common occurrence with 20 of 71 (28.2% individuals originating from a region other than the one they were sampled in. Surprisingly, long-distance natal dispersal was uncommon; only three of 32 (9.4% second-year birds were estimated to have hatched in a region outside their capture region. Young males may be using a form of post-fledging prospecting or conspecific attraction when selecting their first breeding habitats. Populations on the breeding range periphery, such as Ontario and Tennessee, tended to receive fewer long-distance dispersers than did other regions but produced more dispersing individuals than did core regions, suggesting that these areas could act as important sources for other regions. The tendency of a region to produce dispersing individuals was not significantly related to its relative abundance, implying that population abundance is not a

  6. Spatial distribution of nests constrains the strength of sexual selection in a warbler.

    Science.gov (United States)

    Taff, C C; Freeman-Gallant, C R; Dunn, P O; Whittingham, L A

    2013-07-01

    In socially monogamous species, extra-pair paternity may increase the strength of intersexual selection by allowing males with preferred phenotypes to monopolize matings. Several studies have found relationships between male signals and extra-pair mating, but many others fail to explain variation in extra-pair mating success. A greater appreciation for the role that ecological contingencies play in structuring behavioural processes may help to reconcile contradictory results. We studied extra-pair mating in a spatial context in the common yellowthroat (Geothlypis trichas), a territorial wood warbler. Over the course of 6 years, we observed 158 breeding attempts by 99 males, resulting in a total of 369 nests and 520 sampled nestlings. The spatial distribution of territories varied greatly, with males having between 0 and 10 close neighbours and between three and 39 neighbouring nestlings close enough to represent extra-pair siring opportunities. Both within-pair and extra-pair reproductive success increased with breeding density, but the opportunity for sexual selection and strength of selection varied with density. Total variance in reproductive success was highest at low density and was mostly explained by variation in within-pair success. In contrast, at high density, both within-pair and extra-pair successes contributed substantially to variance in reproductive success. The relationships between plumage and extra-pair mating also varied by density; plumage was under strong sexual selection via extra-pair mating success at high density, but no selection was detected at low density. Thus, ecological factors that structure social interactions can drive patterns of sexual selection by facilitating or constraining the expression of mating preferences. © 2013 The Authors. Journal of Evolutionary Biology © 2013 European Society For Evolutionary Biology.

  7. Commensal foraging by a fan-tailed warbler (Euthlypis lachrymosa) with a nine-banded armadillo (Dasypus nocemcinctus) in southwestern Mexico

    Science.gov (United States)

    Richard R. Schaefer; Jesse F. Fagan

    2006-01-01

    Many interspecific commensal foraging interactions involving birds have been documented. We describe an observation of commensal foraging by a fan-tailed warbler (Euthlypis lachrymosa) with a nine-banded armadillo (Dasypus novemcinctus) in Guerrero, southwestern Mexico. Our obsenation is similar to those reported from El Salvador...

  8. Sex and age differences in site fidelity, food resource tracking, and body condition of wintering Kirtland's Warblers (Setophaga Kirtlandii) in the Bahamas

    Science.gov (United States)

    Joseph M. Wunderle, Jr.; Patricia K. Lebow; Jennifer D. White; Dave Currie; David N. Ewert

    2014-01-01

    Distribution of nonbreeding migrant birds in relation to variation in food availability has been hypothesized to result from the interaction of dominance hierarchies and variable movement responses, which together may have sex- and age-specific consequences. We predicted that site fidelity, movements, and abundance of Kirtland’s Warblers (Setophaga kirtlandii...

  9. Effects of prescribed fire on fuels, vegetation, and Golden-cheeked Warbler (Setophaga chrysoparia) demographics in Texas juniper-oak woodlands

    Science.gov (United States)

    Jennifer L. Reidy; Frank R., III Thompson; Carl Schwope; Scott Rowin; James M. Mueller

    2016-01-01

    The Golden-cheeked Warbler (Setophaga chrysoparia) is an endangered songbird that breeds in mature juniper-oak woodlands restricted to Central Texas. This habitat is increasingly susceptible to crown fire due to climate change, land use change, and fire suppression. Prescribed fire is a potential tool to reduce the risk of crown fire and may be a...

  10. Breeding biology of the Three-striped warbler in Venezuela: A contrast between tropical and temperate parulids

    Science.gov (United States)

    Cox, W.A.; Martin, T.E.

    2009-01-01

    We document reproductive life history traits of the Three-striped Warbler (Basileuterus tristriatus) from 146 nests in Venezuela and compare our results to data from the literature for other tropical and temperate parulid species. Mean (?? SE) clutch size was 1.96 ?? 0.03 eggs (n = 96) and fresh egg mass was 2.09 ?? 0.02 g. The incubation period was 15.8 ?? 0.2 days (n = 23) and the nestling period was 10.5 ?? 0.3 days (n = 12). Males did not incubate and rarely provided food for females during incubation. Females had 57 ?? 2% (n = 49) nest attentiveness (% of time on the nest incubating), which caused egg temperature to commonly become cold relative to development. Both adults fed nestlings and feeding rates increased with nestling age. The growth rate constant for nestlings based on mass was K 0.490, which is slower than for north temperate warblers. Predation was the primary source of nest failure and only 22% of nests were successful based on a Mayfield daily predation rate of 0.048 ?? 0.006. Our literature review indicates parulids differ strongly in life histories between temperate and tropical/subtropical sites with species in the tropics having, on average, smaller clutches, longer incubation periods, lower nest attentiveness, longer off-bouts, and longer nestling periods. ?? 2009 by the Wilson Ornithological Society.

  11. Migratory Reed Warblers Need Intact Trigeminal Nerves to Correct for a 1,000 km Eastward Displacement.

    Science.gov (United States)

    Kishkinev, Dmitry; Chernetsov, Nikita; Heyers, Dominik; Mouritsen, Henrik

    2013-01-01

    Several studies have shown that experienced night-migratory songbirds can determine their position, but it has remained a mystery which cues and sensory mechanisms they use, in particular, those used to determine longitude (east-west position). One potential solution would be to use a magnetic map or signpost mechanism like the one documented in sea turtles. Night-migratory songbirds have a magnetic compass in their eyes and a second magnetic sense with unknown biological function involving the ophthalmic branch of the trigeminal nerve (V1). Could V1 be involved in determining east-west position? We displaced 57 Eurasian reed warblers (Acrocephalus scirpaceus) with or without sectioned V1. Sham operated birds corrected their orientation towards the breeding area after displacement like the untreated controls did. In contrast, V1-sectioned birds did not correct for the displacement. They oriented in the same direction after the displacement as they had done at the capture site. Thus, an intact ophthalmic branch of the trigeminal nerve is necessary for detecting the 1,000 km eastward displacement in this night-migratory songbird. Our results suggest that V1 carries map-related information used in a large-scale map or signpost sense that the reed warblers needed to determine their approximate geographical position and/or an east-west coordinate.

  12. HIGHER FITNESS FOR PHILOPATRIC THAN FOR IMMIGRANT MALES IN A SEMI-ISOLATED POPULATION OF GREAT REED WARBLERS.

    Science.gov (United States)

    Bensch, Staffan; Hasselquist, Dennis; Nielsen, Bo; Hansson, Bengt

    1998-06-01

    To compare the fitness of philopatric and immigrant individuals we examined the lifetime reproductive success of 116 male and 137 female great reed warblers. The study was carried out in a semi-isolated population in Sweden and covered breeding adults hatched between 1985 and 1993. Lifetime fitness, measured as life time number of fledglings and offspring recruits, was lower for immigrant than for philopatric males. We found no such relationships for females. The difference in reproductive success could not be explained by immigrant males having lower phenotypic quality because they had similar life span, spring arrival date, and territory quality as philopatric males. The lower lifetime fitness among immigrant than philopatric males appeared to result from reduced mating success. This suggests that females are reluctant to mate with immigrant males despite their apparently similar phenotypic quality. Though it is not known whether females gain in fitness by avoiding matings with immigrant males, it is notable that immigrant males have smaller song repertoires than philopatric males. Large repertoires, previously shown to sexually arouse great reed warbler females, correlate with the occurrence of extrapair paternity and postfledging survival of offspring in our population. © 1998 The Society for the Study of Evolution.

  13. Fuelling in front of the barrier—are there age based behavioral differences in Garden Warblers Sylvia borin?

    Directory of Open Access Journals (Sweden)

    Christos Barboutis

    2014-03-01

    Full Text Available Garden Warblers Sylvia borin were studied during autumn stopover in Crete before crossing the barrier of the Mediterranean Sea and the Sahara Desert. Birds followed with transmitters show extensive stopover periods, which were longer in first-year birds, 16 days, compared with adult birds, 14 days. The distribution of body masses from birds trapped in fig trees were used to estimate the departure body mass and the results found indicate that both age categories on average depart with a fuel load close to 100% of lean body mass. The movement of transmitter birds shows differences between first-year and adult birds. Adult birds move further away from the release site and many also left the study area. Several were found settled outside the study area, up to 17 km away, indicating that they regularly make longer stopover movements. It is suggested that this might be a result of that they return to a place where they stayed during an earlier migration. It was shown that stopover site fidelity exists and nine garden warblers were recaptured in the area during a following autumn. The results found highlights the importance of stopover areas close to the Sahara Desert.

  14. Temperature profiles from mechanical bathythermograph (MBT) casts from the USS WARBLER in the East China Sea in support of the Fleet Observations of Oceanographic Data (FLOOD) project for 1963-03-04 (NODC Accession 6300680)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — MBT data were collected from the USS WARBLER in support of the Fleet Observations of Oceanographic Data (FLOOD) project. Data were collected by US Navy; Ships of...

  15. Temperature profiles from mechanical bathythermograph (MBT) casts from the USS WARBLER in the South China Sea in support of the Fleet Observations of Oceanographic Data (FLOOD) project from 1966-04-21 to 1966-05-28 (NODC Accession 6600712)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — MBT data were collected from the USS WARBLER in support of the Fleet Observations of Oceanographic Data (FLOOD) project. Data were collected by US Navy; Ships of...

  16. Effect of Brood Age on Nestling Diet and Prey Composition in a Hedgerow Specialist Bird, the Barred Warbler Sylvia nisoria

    Science.gov (United States)

    Orłowski, Grzegorz; Wuczyński, Andrzej; Karg, Jerzy

    2015-01-01

    The composition and quality of food provided to nestling birds influence their growth and development and offers key insight into the ecological requirements of birds. One bird species whose feeding ecology is poorly understood is the Barred Warbler (Sylvia nisoria), which utilizes semi-natural shrubby vegetation in agroecosystems. Because Barred Warbler nestlings vary greatly in body mass we hypothesised that diet and prey properties (size, diversity, taxonomic composition, and chitin content and resulting body hardness and digestibility) would differ as the nestlings aged. We quantified the diet based on faecal analysis, sampling faecal sacs from the nestlings pooled into three age classes: 2-3 days old, 4-6 d old, and 7-9 d old. Nestlings were provided a wide diversity of food and a strong relationship existed between food characteristics and nestling age. The youngest nestlings (2-3 d old) had the lowest values of each dietary characteristic (diversity, number and total biomass of prey, and individual prey weight), that were significantly lower than the oldest nestlings (7-9 d old). Nestlings aged 4-6 d exhibited intermediate dietary characteristics. Differences in dietary composition of the six major food types showed marked differences between the individual broods and age categories. Percentages of the number and biomass of soft-bodied prey were highest in the diet of 2-3 d and 4-6 d old nestlings, and decreased with increasing age, whereas the opposite trend was observed in the percentage of intermediately and heavily chitinised prey. Parent Barred Warblers probably preferentially select soft-bodied prey for the youngest nestlings, and satisfy the greater energy demands of the older ones by providing them with a greater variety of prey containing more chitin, as well as plant food. The provisioning of less-readily digestible prey to older nestlings suggests that as the quality of food decreases the quantity increases, implying that the youngest nestlings

  17. Effect of Brood Age on Nestling Diet and Prey Composition in a Hedgerow Specialist Bird, the Barred Warbler Sylvia nisoria.

    Directory of Open Access Journals (Sweden)

    Grzegorz Orłowski

    Full Text Available The composition and quality of food provided to nestling birds influence their growth and development and offers key insight into the ecological requirements of birds. One bird species whose feeding ecology is poorly understood is the Barred Warbler (Sylvia nisoria, which utilizes semi-natural shrubby vegetation in agroecosystems. Because Barred Warbler nestlings vary greatly in body mass we hypothesised that diet and prey properties (size, diversity, taxonomic composition, and chitin content and resulting body hardness and digestibility would differ as the nestlings aged. We quantified the diet based on faecal analysis, sampling faecal sacs from the nestlings pooled into three age classes: 2-3 days old, 4-6 d old, and 7-9 d old. Nestlings were provided a wide diversity of food and a strong relationship existed between food characteristics and nestling age. The youngest nestlings (2-3 d old had the lowest values of each dietary characteristic (diversity, number and total biomass of prey, and individual prey weight, that were significantly lower than the oldest nestlings (7-9 d old. Nestlings aged 4-6 d exhibited intermediate dietary characteristics. Differences in dietary composition of the six major food types showed marked differences between the individual broods and age categories. Percentages of the number and biomass of soft-bodied prey were highest in the diet of 2-3 d and 4-6 d old nestlings, and decreased with increasing age, whereas the opposite trend was observed in the percentage of intermediately and heavily chitinised prey. Parent Barred Warblers probably preferentially select soft-bodied prey for the youngest nestlings, and satisfy the greater energy demands of the older ones by providing them with a greater variety of prey containing more chitin, as well as plant food. The provisioning of less-readily digestible prey to older nestlings suggests that as the quality of food decreases the quantity increases, implying that the

  18. Seasonal Patterns in Hydrogen Isotopes of Claws from Breeding Wood-Warblers (Parulidae: Utility for Estimating Migratory Origins

    Directory of Open Access Journals (Sweden)

    Kevin C. Fraser

    2008-06-01

    Full Text Available The global decline in many species of migratory birds has focused attention on the extent of migratory connectivity between breeding and wintering populations. Stable-hydrogen isotope (δD analysis of feathers is a useful technique for measuring connectivity, but is constrained by features of molt location and timing. Claws are metabolically inert, keratinous tissues that grow continuously and can be sampled at any point in the annual cycle, thus providing potentially useful clues about an individual's previous movements. However, variation in the rate at which claws incorporate local δD values is not well described. We measured δD values in claws of two species of Neotropical-Nearctic migrant wood-warblers (Golden-winged Warbler and Cerulean Warbler breeding in eastern Ontario, Canada to investigate the rate of δD change through the breeding season and the utility of claw δD values for estimating migratory origins. δD values of claw tips from 66 different individuals, each sampled once during the breeding season, showed an average change of -0.3‰ to -0.4‰ per day in the direction of the expected local Ontario value. There were no significant sex or species differences in the rate of change. These results suggest δD values of claw tips in Parulids may reflect those of the non-breeding area for 3-7 weeks after arrival on the breeding grounds, and are useful estimators of non-breeding migratory origin. Our results also suggest that these species may leave the breeding ground before claw tips fully incorporate a local δD signature, as claws sampled at the end of the breeding season did not match locally grown feather and claw δD values. This is the first study to examine the seasonal rate of the change in δD values of claws in long-distance, insectivorous, migratory birds.

  19. Monitoring free-living Japanese Bush Warblers (Cettia diphone) in a most highly radiocontaminated area of Fukushima Prefecture, Japan.

    Science.gov (United States)

    Ishida, Ken; Tanoi, Keitaro; Nakanishi, Tomoko M

    2015-12-01

    The Fukushima-Daiichi Nuclear Power Plant (F1NPP) accident is an IAEA level 7 event, the same as that of Chernobyl, while the amount of radionuclides released is not comparable. Radioactivity attributed to the F1NPP accident was detected 250 km away from the F1NPP. Although we have not yet systematically studied the effect of radionuclides on the environment and wildlife, one of three Japanese Bush Warblers (Cettia diphone), captured in Akaugi district in August 2011, was observed to have a conspicuous lesion near the cloaca, which is rare in Japan. All of the birds' feathers were strongly contaminated. Further study is needed to determine the significance of this result. We emphasize the importance of continuing assessment of the effects of the F1NPP accident on wildlife. © The Author 2016. Published by Oxford University Press on behalf of The Japan Radiation Research Society and Japanese Society for Radiation Oncology.

  20. Monitoring free-living Japanese Bush Warblers (Cettia diphone) in a most highly radiocontaminated area of Fukushima Prefecture, Japan

    International Nuclear Information System (INIS)

    Ishida, Ken; Tanoi, Keitaro; Nakanishi, Tomoko M.

    2015-01-01

    The Fukushima–Daiichi Nuclear Power Plant (F1NPP) accident is an IAEA level 7 event, the same as that of Chernobyl, while the amount of radionuclides released is not comparable. Radioactivity attributed to the F1NPP accident was detected 250 km away from the F1NPP. Although we have not yet systematically studied the effect of radionuclides on the environment and wildlife, one of three Japanese Bush Warblers (Cettia diphone), captured in Akaugi district in August 2011, was observed to have a conspicuous lesion near the cloaca, which is rare in Japan. All of the birds' feathers were strongly contaminated. Further study is needed to determine the significance of this result. We emphasize the importance of continuing assessment of the effects of the F1NPP accident on wildlife

  1. A spatiotemporal analysis of acoustic interactions between great reed warblers (Acrocephalus arundinaceus) using microphone arrays and robot audition software HARK.

    Science.gov (United States)

    Suzuki, Reiji; Matsubayashi, Shiho; Saito, Fumiyuki; Murate, Tatsuyoshi; Masuda, Tomohisa; Yamamoto, Koichi; Kojima, Ryosuke; Nakadai, Kazuhiro; Okuno, Hiroshi G

    2018-01-01

    Acoustic interactions are important for understanding intra- and interspecific communication in songbird communities from the viewpoint of soundscape ecology. It has been suggested that birds may divide up sound space to increase communication efficiency in such a manner that they tend to avoid overlap with other birds when they sing. We are interested in clarifying the dynamics underlying the process as an example of complex systems based on short-term behavioral plasticity. However, it is very problematic to manually collect spatiotemporal patterns of acoustic events in natural habitats using data derived from a standard single-channel recording of several species singing simultaneously. Our purpose here was to investigate fine-scale spatiotemporal acoustic interactions of the great reed warbler. We surveyed spatial and temporal patterns of several vocalizing color-banded great reed warblers ( Acrocephalus arundinaceus ) using an open-source software for robot audition HARK (Honda Research Institute Japan Audition for Robots with Kyoto University) and three new 16-channel, stand-alone, and water-resistant microphone arrays, named DACHO spread out in the bird's habitat. We first show that our system estimated the location of two color-banded individuals' song posts with mean error distance of 5.5 ± 4.5 m from the location of observed song posts. We then evaluated the temporal localization accuracy of the songs by comparing the duration of localized songs around the song posts with those annotated by human observers, with an accuracy score of average 0.89 for one bird that stayed at one song post. We further found significant temporal overlap avoidance and an asymmetric relationship between songs of the two singing individuals, using transfer entropy. We believe that our system and analytical approach contribute to a better understanding of fine-scale acoustic interactions in time and space in bird communities.

  2. Geolocator tracking of Great Reed-Warblers (Acrocephalus arundinaceus) identifies key regions for migratory wetland specialists in the Middle East and sub-Saharan East Africa

    OpenAIRE

    Horns, Joshua J.; Buechley, Evam; Chynoweth, Mark William; Aktay, Lale; Çoban, Emrah; Kırpık, Mehmet Sli; Herman, Jordan M.; Şaşmaz, Yakup; Şekercioğlu, Çağan H.

    2016-01-01

    Wetland-dependent migratory songbirds represent one of the most vulnerable groups of birds on the planet, with >67% of wetland-obligate species threatened with extinction. One of the major hurdles for conservation efforts is determining the migration routes, stopover sites, and wintering sites of these species. We describe an annual migration cycle revealed by geolocator tracking of Great Reed-Warblers (Acrocephalus arundinaceus) breeding in the Aras River wetlands of eastern Turkey. Because ...

  3. Geolocator tracking of Great Reed-Warblers (acrocephalus arundinaceus) identifies key regions for migratory wetland specialists in the Middle East and sub-Saharan East Africa

    OpenAIRE

    Aktay, Lale; Horns J.J.; Buechley E., Chynoweth M.; Çoban E., Kirpik M.A., Herman J.M., Şaşmaz Y., Şekercioǧlu Ç.H.

    2016-01-01

    Wetland-dependent migratory songbirds represent one of the most vulnerable groups of birds on the planet, with >67% of wetland-obligate species threatened with extinction. One of the major hurdles for conservation efforts is determining the migration routes, stopover sites, and wintering sites of these species. We describe an annual migration cycle revealed by geolocator tracking of Great Reed-Warblers (Acrocephalus arundinaceus) breeding in the Aras River wetlands of eastern Turkey. Because ...

  4. Extreme MHC class I diversity in the sedge warbler (Acrocephalus schoenobaenus); selection patterns and allelic divergence suggest that different genes have different functions.

    Science.gov (United States)

    Biedrzycka, Aleksandra; O'Connor, Emily; Sebastian, Alvaro; Migalska, Magdalena; Radwan, Jacek; Zając, Tadeusz; Bielański, Wojciech; Solarz, Wojciech; Ćmiel, Adam; Westerdahl, Helena

    2017-07-05

    Recent work suggests that gene duplications may play an important role in the evolution of immunity genes. Passerine birds, and in particular Sylvioidea warblers, have highly duplicated major histocompatibility complex (MHC) genes, which are key in immunity, compared to other vertebrates. However, reasons for this high MHC gene copy number are yet unclear. High-throughput sequencing (HTS) allows MHC genotyping even in individuals with extremely duplicated genes. This HTS data can reveal evidence of selection, which may help to unravel the putative functions of different gene copies, i.e. neofunctionalization. We performed exhaustive genotyping of MHC class I in a Sylvioidea warbler, the sedge warbler, Acrocephalus schoenobaenus, using the Illumina MiSeq technique on individuals from a wild study population. The MHC diversity in 863 genotyped individuals by far exceeds that of any other bird species described to date. A single individual could carry up to 65 different alleles, a large proportion of which are expressed (transcribed). The MHC alleles were of three different lengths differing in evidence of selection, diversity and divergence within our study population. Alleles without any deletions and alleles containing a 6 bp deletion showed characteristics of classical MHC genes, with evidence of multiple sites subject to positive selection and high sequence divergence. In contrast, alleles containing a 3 bp deletion had no sites subject to positive selection and had low divergence. Our results suggest that sedge warbler MHC alleles that either have no deletion, or contain a 6 bp deletion, encode classical antigen presenting MHC molecules. In contrast, MHC alleles containing a 3 bp deletion may encode molecules with a different function. This study demonstrates that highly duplicated MHC genes can be characterised with HTS and that selection patterns can be useful for revealing neofunctionalization. Importantly, our results highlight the need to consider the

  5. Build-up of the Himalayan avifauna through immigration: a biogeographical analysis of the Phylloscopus and Seicercus warblers.

    Science.gov (United States)

    Johansson, Ulf S; Alström, Per; Olsson, Urban; Ericson, Per G P; Sundberg, Per; Price, Trevor D

    2007-02-01

    The Himalayan mountain range is one of the most species-rich areas in the world, harboring about 8% of the world's bird species. In this study, we compare the relative importance of immigration versus in situ speciation to the build-up of the Himalayan avifauna, by evaluating the biogeographic history of the Phylloscopus/Seicercus warblers, a speciose clade that is well represented in Himalayan forests. We use a comprehensive, multigene phylogeny in conjunction with dispersal-vicariance analysis to discern patterns of speciation and dispersal within this clade. The results indicate that virtually no speciation has occurred within the Himalayas. Instead, several speciation events are attributed to dispersal into the Himalayas followed by vicariance between the Himalayas and China/Southeast Asia. Most, perhaps all, of these events appear to be pre-Pleistocene. The apparent lack of speciation within the Himalayas stands in contrast to the mountain-driven Pleistocene speciation suggested for the Andes and the East African mountains.

  6. On geographic barriers and Pleistocene glaciations: Tracing the diversification of the Russet-crowned Warbler (Myiothlypis coronata) along the Andes

    Science.gov (United States)

    2018-01-01

    We studied the phylogeography and plumage variation of the Russet-crowned Warbler (Myiothlypis coronata), from Venezuela to Bolivia, with focus on populations from Ecuador and northern Peru. We analyzed sequences of mitochondrial and nuclear genes, geographic distributions, as well as photographs of specimens deposited at museum collections. Phylogenetic analyses identified three major lineages formed by populations from: Venezuela and Colombia (M. c. regulus), Ecuador and northern Peru (M. elata, M. castaneiceps, M. orientalis, M. c. chapmani), and central Peru and Bolivia (M. c. coronata). We found further population structure within M. c. regulus and M. c. coronata, and population structure and complexity of plumage variation within the Ecuador-northern Peru lineage. Time-calibrated trees estimated that most intraspecific variation originated during the Pleistocene; however, this pattern may not be attributed to an increase in diversification rate during that period. We discuss these results in the context of the importance of geographic-ecological barriers in promoting lineage diversification along the Andes and put forward a preliminary taxonomic proposal for major lineages identified in this study. PMID:29522515

  7. On geographic barriers and Pleistocene glaciations: Tracing the diversification of the Russet-crowned Warbler (Myiothlypis coronata) along the Andes.

    Science.gov (United States)

    Prieto-Torres, David A; Cuervo, Andrés M; Bonaccorso, Elisa

    2018-01-01

    We studied the phylogeography and plumage variation of the Russet-crowned Warbler (Myiothlypis coronata), from Venezuela to Bolivia, with focus on populations from Ecuador and northern Peru. We analyzed sequences of mitochondrial and nuclear genes, geographic distributions, as well as photographs of specimens deposited at museum collections. Phylogenetic analyses identified three major lineages formed by populations from: Venezuela and Colombia (M. c. regulus), Ecuador and northern Peru (M. elata, M. castaneiceps, M. orientalis, M. c. chapmani), and central Peru and Bolivia (M. c. coronata). We found further population structure within M. c. regulus and M. c. coronata, and population structure and complexity of plumage variation within the Ecuador-northern Peru lineage. Time-calibrated trees estimated that most intraspecific variation originated during the Pleistocene; however, this pattern may not be attributed to an increase in diversification rate during that period. We discuss these results in the context of the importance of geographic-ecological barriers in promoting lineage diversification along the Andes and put forward a preliminary taxonomic proposal for major lineages identified in this study.

  8. Recent status and trends of the land bird avifauna on Saipan, Mariana Islands, with emphasis on the endangered Nightingale Reed-warbler Acrocephalus luscinia

    Science.gov (United States)

    Camp, R.J.; Pratt, T.K.; Marshall, A.P.; Amidon, F.; Williams, L.L.

    2009-01-01

    The avifauna of the Mariana Islands, an archipelago in the western Pacific, faces the threats of rapid economic development and the spread of non-native species, particularly a devastating predator, Brown Tree Snake Boiga irregularis. In this paper, we examine the status and trends of the land bird fauna of Saipan Island based on three island-wide surveys conducted in 1982, 1997, and 2007. During this period, the human population on Saipan increased more than four-fold and much of the island has been developed. The surveys employed standard point-transect methods based on Distance Sampling. Remarkably, we found nearly all species of land birds - 11 native species and three introduced species - to be common or abundant. The exception was the Micronesian Megapode Megapodius laperouse, a historically rare species that was not observed on the 2007 survey, although it does persist on Saipan and other Mariana islands. A comparison of species densities among the three surveys showed that seven species, mainly fruit and seed-eaters, had increased and three species of insectivorous birds had decreased - Rufous Fantail Rhipidura rufifrons, Nightingale Reed-warbler Acrocephalus luscinia, and Golden White-eye Cleptornis marchei. Of these three, Nightingale Reed-warbler is listed as Endangered on the IUCN Red List and as an Endangered Species by the U.S. Fish and Wildlife Service. Reed-warbler densities on Saipan decreased by more than half between 1982 and 2007. Although point transect sampling worked well for this species, density estimates and trends assessment could be improved by reallocating sampling stations among habitats and by more frequent sampling. ?? BirdLife International 2009.

  9. Assessing the Cost of Helping: The Roles of Body Condition and Oxidative Balance in the Seychelles Warbler (Acrocephalus sechellensis)

    Science.gov (United States)

    van de Crommenacker, Janske; Komdeur, Jan; Richardson, David S.

    2011-01-01

    In cooperatively breeding species, helping close relatives may provide important fitness benefits. However, helping can be energetically expensive and may result in increased generation of reactive oxygen species. Consequently, an oxidant/antioxidant imbalance can lead to higher oxidative stress susceptibility. Given the potential costs of helping, it may be that only individuals with a sufficiently good body condition and/or stable oxidative balance can afford to help. Knowledge about relationships between social status and oxidative balance in cooperatively breeding systems is still limited. Studying these relationships is important for understanding the costs of helping and physiological pressures of reproduction. Here we evaluate the relationship between helping behaviour, body condition and oxidative balance in a wild population of the cooperatively breeding Seychelles warbler (Acrocephalus sechellensis). In this species, some subordinate individuals help dominant birds with the rearing of young, while others refrain from any assistance. We assessed body condition and oxidative parameters of birds of different social status caught during different breeding stages. We found that, prior to breeding, female subordinates that did not subsequently help (non-helpers) had significantly lower body condition and higher ROMs (reactive oxygen metabolites) than helpers and dominants. During the later stages of breeding, body condition was low in dominants and helpers, but high in non-helpers. Differences in oxidative balance between individuals of different social status were found only during nest care: Dominant males occupied with guarding behaviours tended to have relatively high oxidative stress susceptibility. Furthermore, dominant and helper females showed elevated antioxidant capacity (measured as OXY) in the weeks just prior to egg-laying, possibly representing a change in their reproductive physiology. The results imply that an individuals' oxidative balance may

  10. A multi-isotope (δ2H, δ13C, δ15N) approach to establishing migratory connectivity in Palearctic-Afrotropical migrants : An example using Wood Warblers Phylloscopus sibilatrix

    NARCIS (Netherlands)

    Hobson, Keith A.; Van Wilgenburg, Steven L.; Wesolowski, Tomasz; Maziarz, Marta; Bijlsma, Rob G.; Grendelmeier, Alex; Mallord, John W.

    2014-01-01

    Wood Warblers Phylloscopus sibilatrix have declined considerably throughout most of their north and western breeding range in Europe but the causes of this decline are unknown. Declines may be related to factors on the breeding grounds, stopover sites and/or wintering grounds. We used multi-isotope

  11. Dietary and faecal iron levels in captive black-and-white ruffed lemurs (Varecia variegata)

    OpenAIRE

    Caravaggi, Anthony; Bishop, Charles

    2016-01-01

    A poster derived from an undergraduate study of iron in captive ruffed lemur diets. The project was supported by the British and Irish Association of Zoos and Aquaria. Presented at the 11th BIAZA Research Symposium, Blackpool Zoo, 2009.

  12. Functional analysis of aggression in a black-and-white ruffed lemur (Varecia variegata variegata).

    Science.gov (United States)

    Farmer-Dougan, Valeri

    2014-01-01

    A functional analysis was conducted to assess the antecedent and reinforcing conditions underlying aggressive behavior in a female lemur in captivity. Results showed that her aggression was primarily the result of human attention. A replacement behavior-training program was introduced, and the lemur's aggression was successfully eliminated. These results demonstrate the utility of using functional assessment and analyses in zoos with captive wild nonhuman animals.

  13. Relationship Between Self-Esteem and Locus of Control in Black and White Fifth Grade Students

    Science.gov (United States)

    Burbach, Harold J.; Bridgeman, Brent

    1976-01-01

    This investigation examines the relationship between fifth graders' scores on Coopersmith's Self Esteem Inventory and the Intellectual Achievement Responsibility Questionnaire. Data were analyzed by race and sex. (GO)

  14. Juvenile Delinquency Recidivism: Are Black and White Youth Vulnerable to the Same Risk Factors?

    Science.gov (United States)

    Barrett, David E.; Katsiyannis, Antonis

    2015-01-01

    Using large-sample, archival data from the state of South Carolina's juvenile justice agency, we examine the question of race differences in predictors of repeat offending for a sample of approximately 100,000 youth who had been referred for criminal offenses. Independent variables relating to background, adverse parenting, mental health,…

  15. Black and White and Shades of Gray [State of the Art].

    Science.gov (United States)

    Johnson, Arthur T

    2018-01-01

    "Moderation in all things" is a popular saying that many of us have heard all our lives. Still, a good number of people seem to have forgotten the sentiment behind this advice. Instead of looking for the good that exists within the bad and the bad that dwells within the good, people are choosing to line up behind one extreme or another. Nuances are being ignored in favor of strong positions on either side of the middle. This has led inevitably to polarization, partisanship, and balkanization in our society. For some reason, moderation has been forgotten.

  16. Counselor Trainee Perceptions of Hispanic, Black, and White Teenage Expectant Mothers and Fathers.

    Science.gov (United States)

    Softas-Nall, Basilia; Baldo, Tracy D.; Williams, Scott C.

    1997-01-01

    Investigates perceptions of counselors-in-training (N=133) of Black, Hispanic, and White male and female adolescents facing a teen pregnancy. After viewing video vignettes, participants indicated that boys would be more encouraged to leave school and work than would girls. Girls were seen as having more control over pregnancy decisions compared to…

  17. Hispanic Segregation and Poor Health: It's Not Just Black and White.

    Science.gov (United States)

    Do, D Phuong; Frank, Reanne; Zheng, Cheng; Iceland, John

    2017-10-15

    Despite the importance of understanding the fundamental determinants of Hispanic health, few studies have investigated how metropolitan segregation shapes the health of the fastest-growing population in the United States. Using 2006-2013 data from the National Health Interview Survey, we 1) examined the relationship between Hispanic metropolitan segregation and respondent-rated health for US-born and foreign-born Hispanics and 2) assessed whether neighborhood poverty mediated this relationship. Results indicated that segregation has a consistent, detrimental effect on the health of US-born Hispanics, comparable to findings for blacks and black-white segregation. In contrast, segregation was salutary (though not always significant) for foreign-born Hispanics. We also found that neighborhood poverty mediates some, but not all, of the associations between segregation and poor health. Our finding of divergent associations between health and segregation by nativity points to the wide range of experiences within the diverse Hispanic population and suggests that socioeconomic status and structural factors, such as residential segregation, come into play in determining Hispanic health for the US-born in a way that does not occur among the foreign-born. © The Author(s) 2017. Published by Oxford University Press on behalf of the Johns Hopkins Bloomberg School of Public Health. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  18. Thinking in Black and White: Conscious thought increases racially biased judgments through biased face memory

    NARCIS (Netherlands)

    Strick, M.A.; Stoeckart, P.F.; Dijksterhuis, A.J.

    2015-01-01

    It is a common research finding that conscious thought helps people to avoid racial discrimination. These three experiments, however, illustrate that conscious thought may increase biased face memory, which leads to increased judgment bias (i.e., preferring White to Black individuals). In

  19. The use of black and white infrared photography for recording blunt force injury.

    Science.gov (United States)

    Bernstein, Mark; Nichols, George; Blair, Jeff

    2013-04-01

    Infrared (IR) wavelengths penetrate skin and can selectively image volumes of subsurface blood. Twenty-eight blunt force injuries on nine decedents were photographed with color and IR film to compare the ability of each to image the injury. Of the 28 injuries, 10 were clinically interpreted as contusions, 4 as abrasions, 10 as abraded contusions, and 4 as erythematous discolorations, nos. Twenty-four of these injuries were incised to determine the presence and extent of subsurface bleeding. It was found that contusion had been clinically missed in five cases, three because they were hidden by abrasion and two because they appeared only as a mild cutaneous erythema. All five cases were detected by IR and verified by incision. Melanin pigmentation contributed to masking of contusion in one case and postmortem lividity confounded interpretation of contusion in one case. In all 14 injuries featuring abrasion as a component, IR de-emphasized or eliminated the visibility of abrasion. A single false negative was reported in which a visible contusion, verified by incision, was not seen with IR. In comparing injury patterns, color and IR renditions were dissimilar in a number of cases reflecting the difference between the manner in which light and IR photography imaged the depth and volume of blood within an injury. In summary, IR imaging of wounds can discover hidden bruises, verify clinical diagnosis of bruises, and augment interpretation of wound patterns. Copyright © 2012 Wiley Periodicals, Inc.

  20. Gentrification in black and white: the racial impact of public housing demolition in American cities.

    Science.gov (United States)

    Goetz, Edward

    2011-01-01

    The gentrification that has transformed high-poverty neighbourhoods in US cities since the mid 1990s has been characterised by high levels of state reinvestment. Prominent among public-sector interventions has been the demolition of public housing and in some cases multimillion dollar redevelopment efforts. In this paper, the racial dimension of state-supported gentrification in large US cities is examined by looking at the direct and indirect displacement induced by public housing transformation. The data show a clear tendency towards the demolition of public housing projects with disproportionately high African American occupancy. The pattern of indirect displacement is more varied; public housing transformation has produced a number of paths of neighbourhood change. The most common, however, involve significant reductions in poverty, sometimes associated with Black to White racial turnover and sometimes not. The findings underscore the central importance of race in understanding the dynamics of gentrification in US cities.

  1. In black and white: a bird's eye overview of Flemish prose on the ...

    African Journals Online (AJOL)

    The universality of western values is examined and the problems regarding acculturation are addressed. In the last two decades authors such as Guido Tireliren and Lieve Joris have tried to understand the Congo from within. Most Flemish literature on the. Congo is not of a high literary quality but from a historical-cultural ...

  2. Gambling involvement among Native Americans, Blacks, and Whites in the United States.

    Science.gov (United States)

    Barnes, Grace M; Welte, John W; Tidwell, Marie-Cecile O

    2017-10-01

    This paper examines risk factors of gambling and problem gambling among racial subgroups in the U.S. population, namely Native Americans and blacks, for whom research data are lacking. Findings are based on a large representative general population survey (n = 3,474) of gambling in the U.S. with an oversample of Native Americans (n = 549). Multiple domains were assessed including sociodemographic factors; ecological factors (census-defined neighborhood disadvantage, geocoded density of casinos within 30 miles of respondents' homes, and perceived gambling convenience); impulsivity; and alcohol abuse. After controlling for all variables in the study, neighborhood disadvantage has a significantly greater effect on overall gambling, frequent gambling, and problem gambling for Native Americans than for the rest of the U.S. In addition, the relationship between frequent gambling and heavier drinking is much stronger for blacks than for the rest of the U.S. There is a lack of research on gambling involvement among minority groups in the U.S. Blacks and Native Americans are at a higher risk for problem gambling as compared with the rest of the population. Furthermore, social factors and alcohol abuse may show a stronger co-occurrence with gambling involvement among minority groups than among whites. This study is a large representative U.S. sample with sizeable numbers of Native Americans and blacks. Thus, prevalence rates and risk factors can be assessed for these important population subgroups. This will allow for targeted intervention programs for Native Americans and blacks with problem gambling and alcohol abuse. (Am J Addict 2017;26:713-721). © 2017 American Academy of Addiction Psychiatry.

  3. Organisational justice rules as determinants of black and white employees' fairness perceptions of personnel selection techniques

    Directory of Open Access Journals (Sweden)

    Angela de Jong

    2000-06-01

    Full Text Available The diversity of the South African population may lead to opinions that test fairness is not a pure empirical problem, but requires certain subjective value judgements. The aim of this study was to identify applicants' underlying reasons for evaluating a selection technique as being fair/unfair. These fairness perceptions were analysed by means of the organisational justice theory. The total sample consisted of 328 mature university students (M = 30,6 all of whom had work experience. The analyses comprised two sets of comparisons. The first set involved Black (uninformed and White (uninformed groups. The second comparison involved informed versus uninformed black students. Exposure to the subjects Strategic Personnel Management and/or undergraduate Industrial Psycohology, in which the nature and value of various selection techniques are studied, constituted the variable'being informed'. It was hypothesised that the Black (uninformed and the White (uninformed groups would perceive the value of the 11 justice rules for the total fairness perception across the ten selection techniques differently. Substantial support was found for this hypothesis. The same hypothesis was investigated for the Black (informed and the Black (uninformed groups, but no significant differences were found to support the latter hypothesis. The implications of these findings are discussed in terms of South African selection practices. Opsomming Die diversiteit van die Suid-Afrikaanse bevolking mag daartoe lei dat persepsies van die billikheid van verskillende personeelkeuringtegnieke op n verskeidenheid van subjektiewe waarde-oordele gegrond word. Dit is die doel van hierdie ondersoek om die onderliggende redes waarvolgens kandidate keuringtegnieke as billik/onbillik evalueer, te identifiseer. Die kandidate se billikheidpersepsies van tien keuringtegnieke is aan die hand van die organisatoriese billikheidteorie ontleed. Die steekproef het bestaan uit 328 volwasse universiteitstudente (M = 30,6 jaar wat almal oor werkervaring beskik het. Die ontledings het twee stelle vergelykings behels. Die eerste stel het Swart (oningeligte en Wit (oningeligte groepe vergelyken die tweede het oningeligte versus ingeligte swart studente vergelyk. Blootstelling aan die vakke Strategiese Personeelbestuur en/of voorgraadse Bedryfsielkunde, waarin die aard en nut van verskeie keuringtegnieke behandel word, het die veranderlike 'ingeligtheid' gespesifiseer. Die hipotese is gestel dat die Swart (oningeligte en Wit (oningeligte groepe die waarde wat hulle aan die 11 billikheidreels ten opsigte van die billikheid van die keuringtegnieke heg, verskillend sal evalueer. Die resultate het hierdie hipotese gesteun. Dieselfde hipotese is ondersoek vir die Swart (ingeligte en Swart (oningeligte groepe, maar geen beduidende verskille is gevind om die laasgenoemde hipotese te ondersteun nie. Die implikasies van hierdie bevindinge word bespreek in terme van keuringpraktyke in Suid-Afrika.

  4. The Mirror of Television: A Comparison of Black and White Adolescents' Body Image.

    Science.gov (United States)

    Botta, Renee A.

    2000-01-01

    Finds that black adolescent girls were more satisfied with their bodies and had a larger personal ideal size than white adolescent girls, but engaged in no fewer eating-disordered behaviors and had no less drive to be thin; and these girls idealized television images equally and were as likely to compare themselves and their friends to television…

  5. A Comparative Analysis of the Travel Behavior of Black and White Travelers

    OpenAIRE

    Gailliard, Flora Montgomery

    1998-01-01

    Tourism, leisure and recreation are considered to be an important form of interaction between cultures and are a basic part of social life (McMillen,1984; Hutchinson and Fidel,1985). The experiences received by participating in various tourism activities may be different due to racial influences. Although in general terms, travelers may have similarities, the ethnic heritage, social and cultural differences between different racial groups produce distinct patterns of leisure travel and recre...

  6. Childhood Religious Conservatism and Adult Attainment among Black and White Women

    Science.gov (United States)

    Glass, Jennifer; Jacobs, Jerry

    2005-01-01

    The resurgence of conservative religious groups over the past several decades raises interesting questions about its effects on women's life chances. Conservative religious institutions promote a traditional understanding of gender within families. Women's beliefs about appropriate family roles, in turn, influence their preparation for market work…

  7. Employment and the use of birth control by sexually active single Hispanic, black, and white women.

    Science.gov (United States)

    Kraft, J M; Coverdill, J E

    1994-11-01

    Previous studies of the use of birth control by sexually active single women tend to emphasize family background and aspirations, and restrict their attention to teenagers. We elaborate this framework by considering how labor market experiences might shape the birth control practices of women in their late teens and twenties. Data from the National Longitudinal Survey of Labor Force Experiences--Youth Cohort provide evidence that employment histories and wages influence birth control practices, net of the effects of family background, aspirations, and educational attainment. Several pronounced racial and ethnic differences are found.

  8. Black and white women in Maryland receive different treatment for cervical cancer.

    Science.gov (United States)

    Fleming, Saroj; Schluterman, Nicholas H; Tracy, J Katthleen; Temkin, Sarah M

    2014-01-01

    Despite an overall decrease in incidence, the death rate from cervical cancer in the United States remains higher in black women than their white counterparts. We examined the Maryland Cancer Registry (MCR) to determine treatment factors that may explain differences in outcomes between races in the state of Maryland. Incident cervical cancers in the MCR 1992-2008 were examined. Demographics, tumor characteristics and treatments were compared between races and over time. Our analysis included 2034 (1301 white, 733 black) patients. Black women were more likely to have locally advanced or metastatic disease at diagnosis (p<0.01). They were more likely to receive any radiation or chemotherapy combined with radiation and less likely to receive surgery (p<0.01). When adjusted for stage and insurance status black women had 1.50 (95% CI 1.20-1.87) times the odds of receiving radiation and 1.43 (95% CI 1.11-1.82) times the odds of receiving chemotherapy. Black women with cervical cancer had 0.51 times the adjusted odds (95% CI 0.41-0.65) of receiving surgery compared to white women. Racial differences in treatment did not change significantly over time. Surgical treatment for newly diagnosed cervical cancer in the state of Maryland was significantly less common amongst black women than white during our study period. Equivalent treatments are not being administered to white and black patients with cervical cancer in Maryland. Differences in care may contribute to racial disparities in outcomes for women with cervical cancer.

  9. Statistical characteristics of breakthrough discoveries in science using the metaphor of black and white swans

    Science.gov (United States)

    Zeng, Carl J.; Qi, Eric P.; Li, Simon S.; Stanley, H. Eugene; Ye, Fred Y.

    2017-12-01

    A publication that reports a breakthrough discovery in a particular scientific field is referred to as a ;black swan;, and the most highly-cited papers previously published in the same field ;white swans;. Important scientific progress occurs when ;white swans; meet a ;black swan;, and the citation patterns of the ;white swans; change. This metaphor combines scientific discoveries and scientometric data and suggests that breakthrough scientific discoveries are either ;black swans; or ;grey-black swans;.

  10. Factors affecting behaviours that address HIV risk among Black and White South Africans

    Directory of Open Access Journals (Sweden)

    K. Peltzer

    2002-09-01

    Full Text Available The aim of this study was to identify factors affecting HIV risk reduction among 150 Black and 150 White South Africans chosen by systematic random sampling. Main outcome measures included sexual behaviour and condom use, knowledge about correct condom use, intention of condom use, behavioural norms, attitudes, normative beliefs, and subjective norms about condoms, HIV/AIDS health beliefs, and HIV risk behaviour. Bivariate analysis gave positive significant relations among being single, age, HIV/ AIDS perceived severity, HIV/AIDS prevention barriers and HIV risk behaviour. Further, bivariate analysis gave negative significant relations among age at onset of puberty, age at first vaginal intercourse, correct condom use knowledge, subjective norms, intention to use condoms and HIV risk behaviour. Regression analysis indicated that for subjective norm to use condoms, less intention for condom use, less condom use knowledge and younger age of first vaginal intercourse were predictive for HIV/AIDS risk behaviour. HIV prevention intervention programmes should include the identified factors and cultural diversity.

  11. Factors affecting behaviours that address HIV risk among Black and White South Africans

    OpenAIRE

    K. Peltzer

    2002-01-01

    The aim of this study was to identify factors affecting HIV risk reduction among 150 Black and 150 White South Africans chosen by systematic random sampling. Main outcome measures included sexual behaviour and condom use, knowledge about correct condom use, intention of condom use, behavioural norms, attitudes, normative beliefs, and subjective norms about condoms, HIV/AIDS health beliefs, and HIV risk behaviour. Bivariate analysis gave positive significant relations among being single, age, ...

  12. Possibility of death sentence has divergent effect on verdicts for Black and White defendants.

    Science.gov (United States)

    Glaser, Jack; Martin, Karin D; Kahn, Kimberly B

    2015-12-01

    When anticipating the imposition of the death penalty, jurors may be less inclined to convict defendants. On the other hand, minority defendants have been shown to be treated more punitively, particularly in capital cases. Given that the influence of anticipated sentence severity on verdicts may vary as a function of defendant race, the goal of this study was to test the independent and interactive effects of these factors. We conducted a survey-embedded experiment with a nationally representative sample to examine the effect on verdicts of sentence severity as a function of defendant race, presenting respondents with a triple murder trial summary that manipulated the maximum penalty (death vs. life without parole) and the race of the defendant. Respondents who were told life-without-parole was the maximum sentence were not significantly more likely to convict Black (67.7%) than White (66.7%) defendants. However, when death was the maximum sentence, respondents presented with Black defendants were significantly more likely to convict (80.0%) than were those with White defendants (55.1%). The results indicate that the death penalty may be a cause of racial disparities in criminal justice, and implicate threats to civil rights and to effective criminal justice. (c) 2015 APA, all rights reserved).

  13. Arboreal locomotion in wild black-and-white snub-nosed monkeys (Rhinopithecus bieti).

    Science.gov (United States)

    Isler, Karin; Gruter, Cyril C

    2006-01-01

    This paper presents spatiotemporal gait parameters of arboreal locomotion in the colobine Rhinopithecus bieti in its natural habitat. While adult females used exclusively either extended-elbow vertical climbing or pulse climbing, the much larger adult males preferred the less demanding flexed-elbow vertical climbing on thin trees or on trunks with handholds. If sex-specific differences are taken into consideration, the differences between flexed-elbow and extended-elbow vertical climbing in Rhinopithecus parallel those observed in Ateles. During flexed-elbow vertical climbing, the gait parameters of R. bieti are very similar to those of spider monkeys (Ateles fusciceps) or bonobos (Pan paniscus). Maximum limb joint excursions also lie in the range of hominoids and atelines and are clearly larger than in Macaca fuscata. It seems likely that climbing kinematics may differ more between Rhinopithecus and macaques than between Rhinopithecus and hominoids or atelines. Copyright 2006 S. Karger AG, Basel.

  14. Body Dissatisfaction and Characteristics of Disordered Eating among Black and White Early Adolescent Girls and Boys

    Science.gov (United States)

    Jung, Jaehee; Forbes, Gordon B.

    2013-01-01

    Multiple measures of body dissatisfaction and behaviors associated with disordered eating were studied in 258 White girls, 223 White boys, 106 Black girls, and 82 Black boys. All participants were unpaid volunteers between the ages of 12 and 15 attending six middle schools in Delaware and Maryland. On two self-ideal figure drawing discrepancy…

  15. Insomnia symptoms and repressive coping in a sample of older Black and White women

    Directory of Open Access Journals (Sweden)

    Pierre-Louis Jessy

    2007-01-01

    Full Text Available Abstract Background This study examined whether ethnic differences in insomnia symptoms are mediated by differences in repressive coping styles. Methods A total of 1274 women (average age = 59.36 ± 6.53 years participated in the study; 28% were White and 72% were Black. Older women in Brooklyn, NY were recruited using a stratified, cluster-sampling technique. Trained staff conducted face-to-face interviews lasting 1.5 hours acquiring sociodemographic data, health characteristics, and risk factors. A sleep questionnaire was administered and individual repressive coping styles were assessed. Fisher's exact test and Spearman and Pearson analyses were used to analyze the data. Results The rate of insomnia symptoms was greater among White women [74% vs. 46%; χ2 = 87.67, p 1,1272 = 304.75, p s = -0.43, p s = -0.18, p Conclusion Relationships between ethnicity and insomnia symptoms are jointly dependent on the degree of repressive coping, suggesting that Black women may be reporting fewer insomnia symptoms because of a greater ability to route negative emotions from consciousness. It may be that Blacks cope with sleep problems within a positive self-regulatory framework, which allows them to deal more effectively with sleep-interfering psychological processes to stressful life events and to curtail dysfunctional sleep-interpreting processes.

  16. Black and White adults' perspectives on the genetics of nicotine addiction susceptibility.

    Science.gov (United States)

    Park, Elyse R; Kleimann, Susan; Youatt, Emily J; Lockhart, Abigail; Campbell, Eric G; Levy, Douglas E; Halbert, Chanita Hughes; Schmieder, Erin; Krishna, Rasika; Shields, Alexandra E

    2011-07-01

    Emerging research may soon lead to improved quit rates via genetically-tailored smoking cessation treatment. The purpose of this study was to explore individuals' beliefs and attitudes about genetic testing in this context, and how these may differ across racial groups. Two site qualitative study. Eleven focus groups were conducted in 2007 with 51 Black and 55 White adult participants in Montgomery, AL and Baltimore, MD. Questions were asked about smoking as an addiction, the role of genetics in nicotine addiction susceptibility, and undergoing genetic testing to receive tailored smoking cessation treatment. Data were analyzed using content analysis. Most participants believed that smoking was an addiction yet were unwilling to endorse the notion that genetics played a role in nicotine addiction susceptibility. However, 91% of White participants and 62% of Black participants indicated that they would likely take a genetic test that would match them to their optimal smoking cessation treatment. The primary potential benefit was a vague sense that additional knowledge about oneself would be of value. Primary barriers included disinterest and skepticism about the test, unwillingness to believe that genetics played a role in nicotine addiction or treatment response, and concerns about psychological consequences. The majority of participants, particularly Black participants, did not believe that genetics played a significant role in nicotine addiction susceptibility but were willing to undergo genetic testing. Participants identified some benefit to tailoring smoking treatment by genotype. However, participants also expressed skepticism about the test and concerns about its consequences; these issues would need to be addressed in the clinical encounter. Copyright © 2011 Elsevier Ltd. All rights reserved.

  17. Heroin in brown, black and white: structural factors and medical consequences in the US heroin market.

    Science.gov (United States)

    Ciccarone, Daniel

    2009-05-01

    Heroin coming into the United States historically comes from three widely dispersed geographical regions: Southwest Asia, Southeast Asia and Mexico. A fourth source of US-bound heroin, from Colombia, originated in the early 1990s. The fact that the four heroin sources produce differing morphologies and qualities of heroin has not been critically examined. In addition, it is not well established how the contemporary competing dynamics of interdiction, or restriction of heroin flows across international boundaries, and neoliberal, e.g., global expansion of free trade, policies are affecting heroin markets. This paper will highlight changes in the US heroin market, including source trends, the political economy of the now dominant source and the resultant effects on the heroin risk environment by US region. Using a structural and historical framework this paper examines two decades of secondary data sources, including government and drug control agency documents, on heroin flows together with published work on the political and economic dynamics in Latin America. Co-occurring neoliberal economic reforms may have contributed to paradoxical effects of US/Colombian interdiction efforts. Since entering the US market, heroin from Colombia has been distributed at a much higher quality and lower retail price. An increasingly exclusive market has developed with Mexican and Colombian heroin gaining market share and displacing Asian heroin. These trends have had dramatic effects on the risk environment for heroin consumers. An intriguing factor is that different global sources of heroin produce substantially different products. Plausible associations exist between heroin source/form and drug use behaviours and harms. For example, cold water-soluble powdered heroin (sources: Asia, Colombia) may be associated with higher HIV prevalence in the US, while low-solubility "black tar" heroin (BTH; source: Mexico) is historically used in areas with reduced HIV prevalence. BTH is associated with soft tissue infections caused by Clostridium bacteria. Source and type of heroin are structural factors in the risk environment of heroin users: source dictates distribution and type predicts practice. How specific types of heroin are used and with what risk is therefore distributed geographically. Continued flux in the heroin market and its effects on the risk environment for drug users deserves further attention.

  18. Transracial Adoption in Black and White: A Survey of Social Worker Attitudes.

    Science.gov (United States)

    Fenster, Judy

    2002-01-01

    Assessed attitudes of U.S. social workers regarding transracial adoption (TRA), specifically black children being adopted by white parents. Found that white social workers were more in favor of TRA than black social workers. African American respondents who were members of the National Association of Black Social Workers had less favorable…

  19. Not so Black and White: environmental justice and cumulative impact assessments

    International Nuclear Information System (INIS)

    Krieg, Eric J.; Faber, Daniel R.

    2004-01-01

    A growing number of scientific studies in recent years have investigated disparate exposure to ecological hazards in American society. Working from an environmental justice perspective, this body of research consistently reveals that poor communities of color are most likely to bear a disproportionate burden of negative externalities. These studies utilize a wide range of research methodologies, including various indicators of ecological hazards (e.g., proximity to waste sites, industrial emissions, ambient air quality), but few, if any, utilize composite measures to approximate cumulative environmental impact. Consequently, the environmental justice (EJ) literature is characterized by a failure to effectively measure overall impact from an extensive range of ecological hazards. Limitations on available data make this a serious problem for present and future studies. We argue that cumulative measures of environmental impact can play an important role in furthering our understanding of environmental injustices in the United States. In this study of Massachusetts, we develop and implement such a cumulative measure of negative environmental impacts. By controlling for the density and severity of ecological hazardous sites and facilities within every community in the state, we demonstrate that exposure patterns take a generally linear distribution when analyzed by race and class. So, while our results reaffirm previous findings that low-income communities and communities of color bear significantly greater ecological burdens than predominantly White and more affluent communities, our findings also suggest that environmental injustices exist on a remarkably consistent continuum for nearly all communities. In other words, as the minority population and lower-income composition of a community increases, correspondingly, so does cumulative exposure to environmental hazards. In this respect, communities which are more racially mixed and of moderate income status that are not typically identified as meeting EJ criteria (in demographic terms) also face more significant ecological hazards. Thus, the strict bifurcation of communities into categories of Environmental Justice and Non-Environmental Justice is problematic, and poses a serious dilemma for policy makers, public health officials, and community activists. To overcome this challenge requires the adoption of a cumulative environmental justice impact assessment (CEJIA), which in addition to the demographic characteristics of a community, also takes into account the total environmental burden and related health impacts upon residents. Furthermore, through the adoption of the precautionary principle, source reduction, and alternative forms of ''cleaner'' production, environmental justice advocates must work for policies which reduce the environmental threat for the full range of communities, as well as their own

  20. Beyond Black and White: Color and Mortality in Post Reconstruction Era North Carolina

    Science.gov (United States)

    Green, Tiffany L; Hamilton, Tod G.

    2014-01-01

    A growing empirical literature in economics and sociology documents the existence of differences in social and economic outcomes between mixed-race blacks and other blacks . However, few researchers have considered whether the advantages associated with mixed-race status may have also translated into differences in mortality outcomes between subgroups of blacks and how both groups compared to whites. We employ previously untapped 1880 North Carolina Mortality census records in conjunction with data from the 1880 North Carolina Population Census to examine whether mulatto, or mixed-race blacks may have experienced mortality advantages over to their colored, or non-mixed race counterparts. For men between the ages of 20-44, estimates demonstrate that all black males are more likely than whites to die. Although our results indicate that there are no statistically significant differences in mortality between mulatto and colored blacks, there are some indications that mulatto males may have enjoyed a slight mortality advantage compared to their colored counterparts. However, we find a substantial mortality advantage associated with mixed-race status among women. These findings indicate that mixed-race women, rather than men, may have accrued any mortality advantages associated with color and white ancestry. PMID:25722496

  1. Comparative levels of creative ability in black and white college students.

    Science.gov (United States)

    Glover, J A

    1976-03-01

    Eighty-seven black, educational psychology students from three intact, randomly selected classes at Tennessee State University were compared to ninety-four white, educational phychology students from three intact, randomly selected classes at the University of Tennessee on Torrance's Unusual Uses and Ask and Guess activities. No differences were found on the frequency of flexibility measures of either activity. No attempt was made to examine the results on this "Level II" mental ability measure on any variable except race. There were no differences based on race.

  2. Comparison of Smoking Habits of Blacks and Whites in a Case-Control Study.

    Science.gov (United States)

    Kabat, Geoffrey C.; And Others

    1991-01-01

    Subjects were interviewed to determine smoking habits of 9,252 current cigarette smokers (11 percent black) and 7,555 former smokers (6 percent black). More blacks than whites smoked. Blacks were three times more likely to be light smokers than heavy smokers. Effective prevention may require better understanding of cultural factors affecting…

  3. Do Survey Data Estimate Earnings Inequality Correctly? Measurement Errors among Black and White Male Workers

    Science.gov (United States)

    Kim, ChangHwan; Tamborini, Christopher R.

    2012-01-01

    Few studies have considered how earnings inequality estimates may be affected by measurement error in self-reported earnings in surveys. Utilizing restricted-use data that links workers in the Survey of Income and Program Participation with their W-2 earnings records, we examine the effect of measurement error on estimates of racial earnings…

  4. Genetic and Environmental Contributions to Cranial Capacity in Black and White Adolescents.

    Science.gov (United States)

    Rushton, J. Philippe; Osborne, R. Travis

    1995-01-01

    Data from 236 pairs of black twins and white twins aged 13-17 years were used to examine genetic and environmental factors influencing cranial size, an indirect estimate of brain volume. Genetic factors are required to account for the phenotypic variance in cranial capacity. (SLD)

  5. Mutations in ATM, Radiation Exposure and Breast Cancer Risk Among Black and White Women

    National Research Council Canada - National Science Library

    Schubert, Elizabeth

    1998-01-01

    .... An important and unresolved question of breast cancer etiology is whether there are other genes which have a more moderate effect on breast cancer risk, possibly involving more women than do other inherited mutations...

  6. Mutations in ATM, Radiation Exposure and Breast Cancer Risk Among Black and White Women

    National Research Council Canada - National Science Library

    King, Mary

    1997-01-01

    .... An important and unresolved question of breast cancer etiology is whether there are other genes which have a more moderate effect on breast cancer risk, possibly involving more women than do other inherited mutations...

  7. Reconstructing color images of astronomical objects using black and white spectroscopic emulsions

    Science.gov (United States)

    Dufour, R. I.; Martins, D. H.

    1976-01-01

    A color photograph of the peculiar elliptical galaxy NGC 5128 (Centaurus A) has been reconstructed from three Kodak 103a emulsion type photographs by projecting positives of the three B&W plates through appropriate filters onto a conventional color film. The resulting photograph shows color balance and latitude characteristics superior to color photographs of similar astronomical objects made with commercially available conventional color film. Similar results have been obtained for color reconstructed photographs of the Large and Small Magellanic Clouds. These and other results suggest that these projection-reconstruction techniques can be used to obtain high-quality color photographs of astronomical objects which overcome many of the problems associated with the use of conventional color film for the long exposures required in astronomy.

  8. Accuracy of Black and White College Students' In-Group and Out-Group Stereotypes.

    Science.gov (United States)

    Ryan, Carey S.

    1996-01-01

    Examined accuracy of black and of white students' in-group and out-group stereotypes by comparing judgments of stereotypicality and dispersion of black and of white first-year college students (N=100) with stereotypicality and dispersion of self-ratings provided by random samples of group members. Consistent with social identity theory,…

  9. Approaches to capturing the Black and White Tegu Salvator merianae (Squamata: Teiidae

    Directory of Open Access Journals (Sweden)

    Renata C. Vieira

    2015-08-01

    Full Text Available ABSTRACT The use of traps is extremely important in several types of ecological studies, and may assist in the capture of individuals in areas that are difficult to access. In the present study, we compared the effectiveness of wooden (Schramm versus "Tomahawk" traps to capture Salvator merianae (Duméril & Bibron, 1839 lizards. The study was conducted in Eldorado do Sul, Rio Grande do Sul, Brazil. Field data were collected from August 2013 to March 2015, during the reproductive period of the species. The study involved two types of baited traps: i "Tomahawk", made of galvanized steel; and ii Schramm, a wooden trap. The capture rate of the Schramm wooden traps was 1.63 individuals/day, and of the "Tomahawk" was 0.36 individuals/day. These results are important for researchers working with large lizards and may help to increase sampling efficiency for these organisms.

  10. Inequality in the Military: An Examination of Promotion Time for Black and White Enlisted Men

    Science.gov (United States)

    Butler, John Sibley

    1976-01-01

    Concludes that the black enlisted now is subject to inequality, which is not the result of failure to meet universalistic criteria (civilian education, armed Forces qualification test and occupation type) but, rather as a result of racism. (Author/AM)

  11. The black-and-white world: Towards the history of dual typologies of nationalism

    Directory of Open Access Journals (Sweden)

    Subotić Milan

    2005-01-01

    Full Text Available Attempts at formulating a dichotomous classification of nations and nationalisms have proliferated in the relevant literature over a long period of time. In this study some of the most influential instances of dual typologies of nationalisms are selected for interpretation and analysis. The examples include Renan's under­standing of differences between the "French" and the "German" concepts of nation; Kohn's distinction between "eastern" and "western" nationalisms; a revision of Kohn's dichotomy suggested by J. Plamenatz; and a more recent version of dual typology propounded by L. Greenfield. By reconstructing the views of the selected theorists of nationalism, at the basis of all these typologies a dichotomous division into "civic" and "ethnic" nationalism is identified. Critical objections to this fundamental dual division are articulated at two levels. At the first, historical level, a socio-political contextualization of dual typologies points to their practical, political-ideological purposes. At the second, conceptual level, and drawing on the ideas of R. Brubaker, the author discusses analytical and normative weaknesses of the usual distinction between "civic" and "ethnic" nationalism.

  12. Young, Depressed, and Black: A Comparative Exploration of Depressive Symptomatology among Black and White Collegiate Women

    Science.gov (United States)

    Longmire-Avital, Buffie; Robinson, Ruthie

    2018-01-01

    This comparative study explored the rates of depression and psychosocial correlates for 369 collegiate White and Black females. Women between the ages of 18 and 25 were recruited to participate in this anonymous online survey. Black females reported significantly greater amounts of depressive symptomatology (M = 24.61) in comparison to the White…

  13. Job Attitudes of Black and White Workers: Male Blue-Collar Workers in Six Companies

    Science.gov (United States)

    Katzell, Raymond A.; And Others

    1974-01-01

    A 74-item attitude questionnaire was administered in six companies to 101 black and 87 white male blue-collar employees holding similar jobs in the same company. Differences between the two ethnic groups were not marked, both in terms of job satisfaction and in other respects. (Author)

  14. Correlates of Obesity in Young Black and White Women: The CARDIA Study.

    Science.gov (United States)

    Burke, Gregory L.; And Others

    1992-01-01

    Contrasts body size and potential correlates of obesity in 1,481 African-American and 1,307 white 18- through 30-year-old women in the Coronary Artery Risk Development in Young Adults Study (CARDIA). The increased prevalence of obesity in African-American women could not be explained by racial differences in age or education. (SLD)

  15. Modeling Malignant Breast Cancer Occurrence and Survival in Black and White Women

    Science.gov (United States)

    Gleason, Michael

    2013-01-01

    Background: Breast cancer (BC), the most common cancer diagnosed in women in the United States, is a heterogeneous disease in which age-specific incidence rates (ASIRs) differ by race and mortality rates are higher in blacks than whites. Goals: (i) understand the reasons for the black-to-white ethnic crossover in the ASIRs; (ii) formulate a…

  16. Mutations in ATM, Radiation Exposure and Breast Cancer Risk Among Black and White Women

    National Research Council Canada - National Science Library

    Schubert, Elizabeth

    1999-01-01

    .... An important and unresolved question of breast cancer etiology is whether there are other genes which have a more moderate effect on breast cancer risk, possibly involving more women than do other inherited mutations...

  17. Phytochemical Contents and Antioxidant and Antiproliferative Activities of Selected Black and White Sesame Seeds

    Science.gov (United States)

    Abbasi, Arshad Mehmood; Zheng, Bisheng

    2016-01-01

    Sesame (Sesamum indicum L.) seeds are popular nutritional food but with limited knowledge about their antioxidant and antiproliferative activities of various varieties. Phytochemical profiles and antioxidant and antiproliferative activities of six varieties of sesame (Sesamum indicum L.) seeds were studied. Fenheizhi3 (black) cultivar exhibited the maximum contents of total phenolics and lignans and values of total oxygen radical absorbance capacity (ORAC) and antiproliferative activity (EC50) against HepG2 cells. Bound ORAC values showed strong associations with bound phenolics contents (r = 0.976, p 0.8, p < 0.05). Interestingly, nonlignan components in bound phenolics contributed to the antioxidant and antiproliferative activities. This study suggested that Fenheizhi3 variety is superior to the other five varieties as antioxidant supplements. PMID:27597975

  18. How does thinking in Black and White terms relate to eating behavior and weight regain?

    NARCIS (Netherlands)

    Palascha, A.; Kleef, van E.; Trijp, van J.C.M.

    2015-01-01

    This study explores the role of dichotomous thinking on eating behavior and its association with restraint eating and weight regain in a wide range of people. In a web-based survey with 241 adults, dichotomous thinking and behavioral outcomes related to eating (restraint eating, weight regain, body

  19. Black and White Dementia Caregivers: A Comparison of Their Adaptation, Adjustment, and Service Utilization.

    Science.gov (United States)

    Hinrichsen, Gregory A.; Ramirez, Mildred

    1992-01-01

    Compared African-American (n=33) and white (n=119) family caregivers of dementia patients on adaptation, adjustment, and utilization of support services. Found African-American and white caregivers differed most notably on marital and financial/insurance status, but there were few differences in adaptation to dementia responsibilities.…

  20. The impact of childhood experience on amygdala response to perceptually familiar black and white faces.

    Science.gov (United States)

    Cloutier, Jasmin; Li, Tianyi; Correll, Joshua

    2014-09-01

    Given the well-documented involvement of the amygdala in race perception, the current study aimed to investigate how interracial contact during childhood shapes amygdala response to racial outgroup members in adulthood. Of particular interest was the impact of childhood experience on amygdala response to familiar, compared with novel, Black faces. Controlling for a number of well-established individual difference measures related to interracial attitudes, the results reveal that perceivers with greater childhood exposure to racial outgroup members display greater relative reduction in amygdala response to familiar Black faces. The implications of such findings are discussed in the context of previous investigations into the neural substrates of race perception and in consideration of potential mechanisms by which childhood experience may shape race perception.

  1. Women's Sports Media, Self-Objectification, and Mental Health in Black and White Adolescent Females.

    Science.gov (United States)

    Harrison, Kristen; Fredrickson, Barbara L.

    2003-01-01

    Considers that sports media exposure may be linked to female adolescents' body perceptions. Tests this relationship from the perspective of objectification theory. Finds that self-objectification appears to be as problematic for adolescent girls as for college women, regardless of race or body mass. Focuses on self-objectification in adolescents…

  2. Black and white Australia, 1770-1970. A History of Dispossession

    OpenAIRE

    Appetiti, Emanuela

    1999-01-01

    The purpose of this paper is to provide an account of the contact/impact between Aborigines and Europeans, generated by the coming of the British First Fleet to Australia in 1770, and the further European Settlement. It will outline the changing attitudes of White Australians towards Aboriginal Australians, passing from the initial violence of the colonisation, to the paternalism and protective feeling which characterized the first years of this century. It will then define the policy of forc...

  3. Black and white Australia, 1770-1970. A History of Dispossession

    Directory of Open Access Journals (Sweden)

    Appetiti, Emanuela

    1999-12-01

    Full Text Available The purpose of this paper is to provide an account of the contact/impact between Aborigines and Europeans, generated by the coming of the British First Fleet to Australia in 1770, and the further European Settlement. It will outline the changing attitudes of White Australians towards Aboriginal Australians, passing from the initial violence of the colonisation, to the paternalism and protective feeling which characterized the first years of this century. It will then define the policy of forcible assimilation and that of integration, which shaped the years between the 1940's and the end of the 1970's.

    El propósito de este artículo es estudiar el contacto/impacto que tuvo lugar en Australia entre aborígenes y europeos, generado por la llegada de la Primera Flota Británica en 1770 y la posterior colonización europea de esas tierras. El trabajo se centra en las actitudes cambiantes de los Australianos blancos con respecto a los aborígenes, que pasaron desde la violencia inicial al principio de la colonización, al paternalismo y sentimientos protectores que caracterizaron los primeros años del siglo XX. Finalmente se analiza la política de asimilación e integración forzosa asumida en el período que se extiende entre las décadas del 40 y el 70 de este siglo.

  4. Epidemiology of Theileria bicornis among black and white rhinoceros metapopulation in Kenya

    OpenAIRE

    Otiende, Moses Y; Kivata, Mary W; Makumi, Joseph N; Mutinda, Mathew N; Okun, Daniel; Kariuki, Linus; Obanda, Vincent; Gakuya, Francis; Mijele, Dominic; Soriguer, Ram?n C; Alasaad, Samer

    2015-01-01

    Background A huge effort in rhinoceros conservation has focused on poaching and habitat loss as factors leading to the dramatic declines in the endangered eastern black rhinoceros (Diceros bicornis michaeli) and the southern white rhinoceros (Ceratotherium simum simum). Nevertheless, the role disease and parasite infections play in the mortality of protected populations has largely received limited attention. Infections with piroplasmosis caused by Babesia bicornis and Theileria bicornis has ...

  5. Influence of Religion on Later Burden and Health of New Black and White Caregivers.

    Science.gov (United States)

    Fider, Carla R A; Lee, Jerry W; Gleason, Peter C; Jones, Patricia

    2017-04-01

    We assessed the relationship between positive aspects of religiosity and reduced stress in caregivers, and negative aspects of religiosity and increased caregiver burden. Using data from the Biopsychosocial Religion and Health Study, we performed multiple linear regression analysis on 584 caregivers. Mental health, but not physical health, was predicted by caregiver burden. Caregivers who viewed God as loving and not controlling and felt a sense of community with their church family had less burden. Caregivers who engaged in negative religious coping had a greater decline in mental health than those who saw God as loving and not controlling and who gave emotional support to others. Some aspects of religion appear to play an important role in alleviating the mental stresses of being a caregiver.

  6. Men and their Portrayal in Beloved: The Framing of Black and White ...

    African Journals Online (AJOL)

    Through her male characters' lives in Beloved, Morrison demonstrates the complexities and paradoxes inherent in the making of black masculinities and the oppression and denial of selfhood they experience in a slave-owning era. She thus tells the stories of black male characters and invests them with voice and visibility.

  7. A Study of Black and White Men With a Family History of Prostate Cancer

    Science.gov (United States)

    2002-03-01

    declaraciones : Los beneficios de un examen de sangre PSA son mayores que cualquier inconveniencia. 1 esta de acuerdo 2 no esta de acuerdo WDK X RF...Asociaci6n Americana de Canccr. recomoiendan altameonte quo hombres mayores de 40 afios tengan tan examenc anual do sangre PSA, especisiruente si tiene

  8. An Appalachian portrait : black and white in Montgomery County, Virginia, before the Civil War

    OpenAIRE

    Grant, Charles L.

    1987-01-01

    Montgomery County, Virginia, is a southern Appalachian county founded in 1776. Throughout the county's antebellum history, as with most other regions of the South, four major population groups were visibly present. There were slaves, free blacks, white slaveowners, and white non-slaveowners. Little research has previously been conducted on the antebellum people of the Appalachian South. This work is a social history consisting of cross tabulations of data found in the county...

  9. Computer Ethics: A Slow Fade from Black and White to Shades of Gray

    Science.gov (United States)

    Kraft, Theresa A.; Carlisle, Judith

    2011-01-01

    The expanded use of teaching case based analysis based on current events and news stories relating to computer ethics improves student engagement, encourages creativity and fosters an active learning environment. Professional ethics standards, accreditation standards for computer curriculum, ethics theories, resources for ethics on the internet,…

  10. "Expressive Cool" and the Paradox of Black and White Males' Neighborhood Socialization toward Education

    Science.gov (United States)

    Johnson, Odis, Jr.

    2018-01-01

    This study explores how linkages between adolescents' educational attitudes and achievement vary according to race, expressive culture, and neighborhood collective socialization qualities. Specifically, the study examines (a) racial differences in how males' educational attitudes relate to their academic performance (i.e.,…

  11. A Story in Black and White: Radiologic Evaluation in the Multidisciplinary Setting.

    Science.gov (United States)

    Sepahdari, Ali R; Salehi, Banafsheh

    2017-08-01

    Strong engagement from expert radiologists is essential in ensuring the optimal function of a multidisciplinary group focused on the treatment of head and neck cancer. Active participation in multidisciplinary conference can be among the most rewarding roles for radiologists. Despite many benefits to radiologist involvement in multidisciplinary teams, there are obstacles and challenges that can prevent full participation. This article highlights the key issues that should be considered by radiologists and multidisciplinary team leaders when planning participation in a new or existing multidisciplinary group that focuses on the care of patients with head and neck cancer. Copyright © 2017 Elsevier Inc. All rights reserved.

  12. Relationships Between Smoking and Sleep Problems in Black and White Adolescents.

    Science.gov (United States)

    Bellatorre, Anna; Choi, Kelvin; Lewin, Daniel; Haynie, Denise; Simons-Morton, Bruce

    2017-01-01

    The relationship between sleeping and smoking during adolescence remains unclear and is likely complex. We aim to evaluate the longitudinal reciprocal associations between sleep problems, sleep duration, and smoking among non-Hispanic white (NHW) and non-Hispanic black (NHB) youth. Prospective cohort study. NEXT Generation Health Study. A national sample (N = 1394) of NHB and NHW 10th graders were surveyed annually between 2009 (Wave 1) and 2012 (Wave 3). N/A. Past 30-day smoking, chronic difficulty falling asleep, recent difficulty falling asleep, difficulty staying asleep, and weekday and weekend sleep duration were measured at each wave. Using structural equation models, we observed significant autocorrelations over time for sleep problems and sleep duration. We found significant reciprocal, prospective relationships between smoking and sleep problems. The strengths of the relationships differed by race, with a stronger association between sleep problems and subsequent smoking for NHB than NHW youth. Conversely, a stronger association between smoking and subsequent sleep problems for NHW than NHB youth was observed. These association were independent of demographics, snoring or sleep apnea, body mass index, depressive symptoms, alcohol use, and soda consumption. Reciprocal and prospective relationships exist for youth smoking and sleep problems and duration in both NHW and NHB youth. Further research is needed to unravel the complex relationship between the direct effects of nicotine, lifestyle choices that may link smoking and sleep problems, and racial differences. Published by Oxford University Press on behalf of Sleep Research Society (SRS) 2016. This work is written by (a) US Government employee(s) and is in the public domain in the US.

  13. Temperature profiles from mechanical bathythermograph (MBT) casts from the USS WARBLER in the Eastern China Sea and other locations in support of the Fleet Observations of Oceanographic Data (FLOOD) project from 1966-09-19 to 1966-09-27 (NODC Accession 6600396)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — MBT data were collected from the USS WARBLER in support of the Fleet Observations of Oceanographic Data (FLOOD) project. Data were collected in the Eastern China Sea...

  14. How a simple and stereotyped acoustic signal transmits individual information: the song of the White-browed Warbler Basileuterus leucoblepharus

    Directory of Open Access Journals (Sweden)

    Thierry Aubin

    2004-06-01

    Full Text Available The White-browed Warbler Basileuterus leucoblepharus, a common bird of the BrazilianAtlantic forest, emits only one distinct song type in the context of territorial defense. Individual or neighbor-stranger recognition may be more difficult when birds share similar songs. In fact, the analysis of songs of different individuals reveals slight differences in the temporal and the frequency domains. Effectively, a careful examination of the signals of different individuals (21 by 5 complementary methods of analysis reveals first, that one or two gaps in frequency occur between two successive notes at different moments of the song, and second, that their temporal and frequency positions are stereotyped for each individual. Playback experiments confirm these findings. By propagation experiments, we show that this individual information can be only transmitted at short range (O Pula-pula-assobiador Basileuterus leucoblepharus, um pássaro comum da Mata Atlântica, emite um único e distintivo tipo de canto para defesa territorial. O reconhecimento individual ou entre vizinho e estranho pode ser mais difícil quando as aves compartilham cantos semelhantes. De fato, a análise dos cantos de diferentes indivíduos revelou ligeiras diferenças nos domínios temporal e das freqüências. Efetivamente, um exame cuidadoso dos sinais de 21 indivíduos diferentes por 5 métodos complementares de análise revelou que, primeiro, um ou dois espaços na série tonal ocorrem entre duas notas sucessivas em determinados momentos do canto e, segundo, ocupam posições em tempo e freqüência estereotipadas para cada indivíduo. Experiências de "play-back" confirmam esses dados. Através de experiências de propagação, mostramos que esta informação individual pode ser transmitida somente a curta distância ( < 100 m na mata. Considerando o tamanho e a repartição dos territórios, este processo de comunicação mostra-se eficiente e bem adaptado.

  15. Acoustic Identification of Individuals within Large Avian Populations: A Case Study of the Brownish-Flanked Bush Warbler, South-Central China

    Science.gov (United States)

    Xia, Canwei; Lin, Xuanlong; Liu, Wei; Lloyd, Huw; Zhang, Yanyun

    2012-01-01

    Acoustic identification is increasingly being used as a non-invasive method for identifying individuals within avian populations. However, most previous studies have utilized small samples of individuals (Warbler (Cettia fortipes) in the Dongzhai National Nature Reserve, south-central China. Most spectro-temporal variables we measured show greater variation among individuals than within individual. Although there was slight decline in the correct rate of individual identification with increasing sample sizes, the total mean correct rate yielded by discriminant function analysis was satisfactory, with more than 98% of songs correctly recognized to the corresponding individuals. We also found that using a part of randomly selected measured variables was sufficient to obtain a high correct rate of individual identification. We believe that our work will increase confidence in the use of using acoustic recognition techniques for avian population monitoring programs. PMID:22880018

  16. Effects of asymmetric nuclear introgression, introgressive mitochondrial sweep, and purifying selection on phylogenetic reconstruction and divergence estimates in the Pacific clade of Locustella warblers.

    Science.gov (United States)

    Drovetski, Sergei V; Semenov, Georgy; Red'kin, Yaroslav A; Sotnikov, Vladimir N; Fadeev, Igor V; Koblik, Evgeniy A

    2015-01-01

    When isolated but reproductively compatible populations expand geographically and meet, simulations predict asymmetric introgression of neutral loci from a local to invading taxon. Genetic introgression may affect phylogenetic reconstruction by obscuring topology and divergence estimates. We combined phylogenetic analysis of sequences from one mtDNA and 12 nuDNA loci with analysis of gene flow among 5 species of Pacific Locustella warblers to test for presence of genetic introgression and its effects on tree topology and divergence estimates. Our data showed that nuDNA introgression was substantial and asymmetrical among all members of superspecies groups whereas mtDNA showed no introgression except a single species pair where the invader's mtDNA was swept by mtDNA of the local species. This introgressive sweep of mtDNA had the opposite direction of the nuDNA introgression and resulted in the paraphyly of the local species' mtDNA haplotypes with respect to those of the invader. Тhe multilocus nuDNA species tree resolved all inter- and intraspecific relationships despite substantial introgression. However, the node ages on the species tree may be underestimated as suggested by the differences in node age estimates based on non-introgressing mtDNA and introgressing nuDNA. In turn, the introgressive sweep and strong purifying selection appear to elongate internal branches in the mtDNA gene tree.

  17. Differential catabolism of muscle protein in garden warblers (Sylvia borin): flight and leg muscle act as a protein source during long-distance migration.

    Science.gov (United States)

    Bauchinger, U; Biebach, H

    2001-05-01

    Samples of flight and leg muscle tissue were taken from migratory garden warblers at three different stages of migration: (1) pre-flight: when birds face an extended flight phase within the next few days, (2) post-flight: when they have just completed an extended flight phase, and (3) recovery: when they are at the end of a stop-over period following an extended flight phase. The changes in body mass are closely related to the changes in flight (Pflight. From pre- to post-flight, the flight and the leg muscle masses decrease by about 22%, but are restored to about 12% above the pre-flight masses during the recovery period. Biochemical analyses show that following flight a selective reduction occurred in the myofibrillar (contractile) component of the flight muscle (Pflight and leg muscle act as a protein source during long-distance migration. As a loss of leg muscle mass is additionally observed besides the loss in flight muscle mass, mass change seems not to be strictly associated with the mechanical power output requirements during flight. Whereas the specific content of sarcoplasmic proteins in the flight muscle is nearly twice as high as that in the leg muscle (Pflight muscle is one of the highest observed in muscles of a vertebrate.

  18. Composition of Bacterial Assemblages in Different Components of Reed Warbler Nests and a Possible Role of Egg Incubation in Pathogen Regulation.

    Directory of Open Access Journals (Sweden)

    Hanja B Brandl

    Full Text Available Bacteria play a central role in animal health. Yet, little is known about the acquisition of bacteria and the extent to which bacteria are acquired from different environmental sources. For example, bird nests host diverse bacteria associated with the eggs, nestlings and nesting material, but previous research has typically focussed on only a limited number of nest components at a time. It therefore remains unknown to what extent bacteria are transmitted between these components. Using both molecular and culture techniques, we characterised nest-associated bacterial assemblages throughout the entire nesting cycle of reed warblers by sampling bacteria on eggs before and during incubation, within nestling faeces, and on the nesting material of post-breeding nests. We found that bacterial assemblages clustered by nest component. Yet some overlap existed between nest components, suggesting that bacterial transmission across components is likely to occur. Eggs and nestlings from the same nest harboured more similar bacteria than expected by chance, suggesting an influence of environment or genetics on bacterial assemblages. Bacterial loads were not lower on incubated eggs. Instead, incubation was associated with a change in the structure of assemblages, including a decrease in potentially-harmful Gram-negative bacteria. In addition we show for the first time, that incubation is associated with the complete extinction of harmful haemolytic bacteria. Overall, our study appears to be the first to demonstrate differences in bacterial assemblages between bird nest components. In addition, we highlight the complexity of nest bacterial assemblages and provide new insights into the benefits of incubation.

  19. Combining genetic markers and stable isotopes to reveal population connectivity and migration patterns in a neotropical migrant, Wilson's warbler (Wilsonia pusilla).

    Science.gov (United States)

    Clegg, Sonya M; Kelly, Jeffrey F; Kimura, Mari; Smith, Thomas B

    2003-04-01

    We used results from the analysis of microsatellite DNA variation and hydrogen stable-isotope ratios to characterize the population structure of a neotropical migrant passerine, the Wilson's warbler (Wilsonia pusilla). The resulting information was then used to infer migration patterns and population connectivity between breeding grounds in North America and overwintering areas in Mexico and Central America. The microsatellite data revealed genetic structure across the North American continent; populations in the west were found to significantly differ from the east. Minimal genetic structure was observed among western sites. The lack of isolation by distance and low variance in FST values suggests that gene flow could play an ongoing role in limiting genetic differentiation among sites in the western part of the distribution. However, additional information including estimates of effective population size and the proximity of the population to equilibrium is required before the role of gene flow can be assessed fully. Analysis of isotope data showed a negative relationship between latitude and hydrogen isotope ratios in breeding ground individuals. There was a positive relationship between wintering ground latitude and hydrogen isotope ratios for individuals that were genetically western in origin. This is consistent with a leapfrog pattern of migration, in which genetically western birds from the northernmost breeding areas overwinter at the most southerly locations in Central America. Additionally, isotopic ratios of western birds suggest that coastal breeders overwinter in western Mexico, while western birds from further inland and at high elevations overwinter in eastern Mexico. Using information from both genetic an isotopic approaches will probably be useful for identifying patterns of migration and population connectivity between breeding and overwintering areas, both important issues for conservation efforts, and may also contribute to investigation of the

  20. Multiple plumage traits convey information about age and within-age-class qualities of a canopy-dwelling songbird, the Cerulean Warbler

    Science.gov (United States)

    Boves, Than J.; Buehler, David A.; Wood, Petra Bohall; Rodewald, Amanda D.; Larkin, Jeffrey L.; Keyser, Patrick D.; Wigley, T. Ben

    2014-01-01

    Colorful plumage traits in birds may convey multiple, redundant, or unreliable messages about an individual. Plumage may reliably convey information about disparate qualities such as age, condition, and parental ability because discrete tracts of feathers may cause individuals to incur different intrinsic or extrinsic costs. Few studies have examined the information content of plumage in a species that inhabits forest canopies, a habitat with unique light environments and selective pressures. We investigated the information content of four plumage patches (blue-green crown and rump, tail white, and black breast band) in a canopy-dwelling species, the Cerulean Warbler (Setophaga cerulea), in relation to age, condition, provisioning, and reproduction. We found that older males displayed wider breast bands, greater tail white, and crown and rump feathers with greater blue-green (435–534 nm) chroma and hue than males in their first potential breeding season. In turn, older birds were in better condition (short and long term) and were reproductively superior to younger birds. We propose that these age-related plumage differences (i.e. delayed plumage maturation) were not a consequence of a life history strategy but instead resulted from constraints during early feather molts. Within age classes, we found evidence to support the multiple messages hypothesis. Birds with greater tail white molted tails in faster, those with more exaggerated rump plumage (lower hue, greater blue-green chroma) provisioned more, and those with lower rump blue-green chroma were in better condition. Despite evidence of reliable signaling in this species, we found no strong relationships between plumage and reproductive performance, potentially because factors other than individual differences more strongly influenced fecundity.

  1. Environmental enrichment to address behavioral differences between wild and captive black-and-white ruffed lemurs (Varecia variegata).

    Science.gov (United States)

    Kerridge, Frances J

    2005-05-01

    I compared the behaviors of wild Varecia variegata living in a Malagasy rain forest with those of caged groups living in zoos in the United Kingdom in order to design environmental enrichment to encourage more natural behaviors. Comparisons were made between wild and captive animals in terms of activity budgets (instantaneously sampled at 1-min intervals) and social and solitary behaviors, which were continuously recorded for focal individuals. I followed the same sampling protocol during behavioral enrichment experiments, with additional monitoring of the amount and type of food consumed, and with more detailed observations of feeding behavior. No significant differences were found in resting or moving between wild and captive V. variegata. However, captive V. variegata spent more time on self-grooming and social behaviors, and less time feeding than wild V. variegata. There was also a lack of manual manipulation of food items. Behavioral enrichment experiments were carried out in which whole rather than chopped fruit was provided and presented in a more naturalistic manner. With this method of dietary presentation, manual manipulation of dietary items increased. Time spent feeding also increased significantly. Captive conservation breeding programs should not be wholly concerned with maintaining a diverse gene pool-they should also be concerned with conserving species-typical behaviors, especially if they are to produce behaviorally intact captive animals that can be reintroduced to the wild with minimal training, financial resources, and loss of individuals. Copyright 2005 Wiley-Liss, Inc

  2. Blacks and whites in the Cuba have equal prevalence of hypertension: confirmation from a new population survey

    Science.gov (United States)

    2013-01-01

    Background The excess burden of hypertension among blacks has been a prominent feature of the heath disparities literature, and many scientists presume it to be a stable and inevitable phenomenon. The underlying causes of this disparity can only be disentangled in a setting in which the population does not experience racial stratification of socioeconomic opportunities. While such conditions of racial equality remain uncommon, they may be approximated in Cuba, a country with a persistent policy of social inclusion over the last 5 decades. Methods We report on a 2010–2011 stratified probability sample of those aged 15–74 years from the urban population of Cienfuegos in central Cuba. A total of 1496 adults (880 women and 616 men) were recruited and assessed for blood pressure and anthropometrics according to standardized protocols, as well as medication use, educational attainment and observed skin tone (dichotomized into “black” and “white”). Weighted tabular and regression analyses were conducted to estimate adjusted prevalences of hypertension (> 140/90 mmHg) and adjusted prevalence odds ratios for contrasts between the two skin color groups. Results Mean pressures were higher for men than for women, but overall did not differ importantly between racial groups. About half of all diagnosed hypertensive men were on medication, a proportion that did not vary by racial group. For women, however, adjusted prevalence was somewhat higher among blacks, and treatment and control rates were also somewhat advantaged for white women. Conclusions Overall, skin color was unrelated to mean blood pressure or hypertensive status in this population, although among women specifically some racial advantage appears evident in adjusted prevalence and control, and should be investigated further. The overall null result suggests that Cuba may exemplify the social conditions in which racial excess in hypertension, characteristic of much of the western world, is not a necessary reality. PMID:23433343

  3. The Relationship between Alcohol Drinking Patterns and Sleep Duration among Black and White Men and Women in the United States

    Directory of Open Access Journals (Sweden)

    Chandra L. Jackson

    2018-03-01

    Full Text Available In the United States, racial minorities generally experience poorer cardiovascular health compared to whites, and differences in alcohol consumption and sleep could contribute to these disparities. With a nationally representative sample of 187,950 adults in the National Health Interview Survey from 2004 to 2015, we examined the relationship between alcohol-drinking patterns and sleep duration/quality by race and sex. Using Poisson regression models with robust variance, we estimated sex-specific prevalence ratios for each sleep duration/quality category among blacks compared to whites within categories of alcohol-drinking pattern, adjusting for socioeconomic status and other potential confounders. Across alcohol drinking patterns, blacks were less likely than whites to report recommended sleep of 7–<9 h/day. Short (PR = 1.30 [95% CI: 1.22–1.39] and long (PR = 1.30 [95% CI: 1.07–1.58] sleep were 30% more prevalent among black-male infrequent heavy drinkers compared to white-male infrequent heavy drinkers. Short (PR = 1.27 [95% CI: 1.21–1.34] sleep was more prevalent among black-female infrequent heavy drinkers compared to white-female infrequent heavy drinkers, but there was no difference for long sleep (PR = 1.09 [95% CI: 0.97–1.23]. Black female infrequent moderate drinkers, however, had a 16% higher (PR = 1.16 [95% CI: 1.01–1.33] prevalence of long sleep compared to their white counterparts. Environmental, social, and biological factors contributing to these findings, along with their impact on disparate health outcomes, should be studied in greater detail.

  4. A tale of two towns: black and white municipalities respond to urban growth in the South Carolina lowcountry

    Science.gov (United States)

    Cassandra Y. Johnson; Myron F. Floyd

    2006-01-01

    Sea Islands off the South Carolina coast have experienced rapid development rates in the past half century. This trend is now impacting the rural Lowcountry (coastal) near Charleston, SC. A better understanding of traditional rural communities' responses to expanding urbanization is critical because of the obvious threat to the natural environment in rural areas...

  5. Does Parenting Explain the Effects of Structural Conditions on Children's Antisocial Behavior? A Comparison of Blacks and Whites.

    Science.gov (United States)

    McLeod, Jane D.; And Others

    1994-01-01

    Data on black children and white children over age six and their mothers (from National Longitudinal Survey of Youth) indicate no racial differences in total effects of poverty and single parenthood on parenting practices (affection and spanking). Parenting practices were reciprocally related to child's antisocial behavior for whites, but did not…

  6. The convergence of lung cancer rates between blacks and whites under the age of 40, United States.

    Science.gov (United States)

    Jemal, Ahmedin; Center, Melissa M; Ward, Elizabeth

    2009-12-01

    Lung cancer rates in the United States have been consistently higher in blacks than in whites at all ages in men and at younger ages in women. However, since the 1970s, smoking initiation decreased more rapidly among blacks than whites. We examined trends in lung cancer rates for white and black young adults (ages 20-39) from 1992 to 2006 using joinpoint models and black-to-white rate ratios by sex. Lung cancer death rates in 20- to 39-year-olds significantly decreased in all groups but was much steeper for blacks than for whites. From 1992 to 1994 and 2004 to 2006, the black-to-white mortality rate ratio (95% confidence interval) decreased from 2.16 (1.90-2.44) to 1.28 (1.05-1.55) for men and from 1.47 (1.25-1.71) to 0.97 (0.78-1.19) for women. A similar convergence was observed in the lung cancer incidence rates. These findings suggest that if current smoking trends in the young continue, racial differences in overall lung cancer rates in men will be eliminated in the next 40 to 50 years.

  7. Obesity and Cardiovascular Disease Risk Factors in Black and White Girls: The NHLBI Growth and Health Study.

    Science.gov (United States)

    American Journal of Public Health, 1992

    1992-01-01

    The National Heart, Lung, and Blood Institute (NHLBI) Growth and Health Study Research Group's 5-year cohort study provides basic information on the baseline cohort of 1,166 white and 1,213 African-American girls aged 9 through 10 years. Factors associated with development of obesity and cardiovascular risk factors are assessed. (SLD)

  8. Some factors in condom use amongst first-year Nigerian University students and black and white South Africans.

    Science.gov (United States)

    Peltzer, Karl; Oladimeji, Yetunde

    2004-04-01

    A questionnaire was administered to 213 sexually active first-year Nigerian university students and 150 Black and 150 White South African adults. Nigerian students gave 90% correct answers on 6 of the 10 items of a measure of condom knowledge (M = 6.1). The most common mistakes with respect to condom use were ignorance about putting a condom on just before ejaculation (37%), the use of an oil-based lubricant with a condom (29%), and when to take off a condom (28%). For the South African sample utility of the Health Belief Model and Theory of Reasoned Action for HIV prevention could be confirmed by intention to use condoms. Race and preventive benefits were predictive for current condom use. Findings have relevant implications for developing culturally diverse HIV intervention programs if confirmed with larger diverse groups.

  9. Race, Poverty and SAT Scores: Modeling the Influences of Family Income on Black and White High School Students' SAT Performance

    Science.gov (United States)

    Dixon-Roman, Ezekiel J.; Everson, Howard T.; McArdle, John J.

    2013-01-01

    Background: Educational policy makers and test critics often assert that standardized test scores are strongly influenced by factors beyond individual differences in academic achievement such as family income and wealth. Unfortunately, few empirical studies consider the simultaneous and related influences of family income, parental education, and…

  10. CONTRIBUTIONS TO THE KNOWLEDGE OF SOME ASPECTS REGARDING THE DRINKING BEHAVIOUR IN MULTIPAROUS ROMANIAN BLACK AND WHITE COWS

    Directory of Open Access Journals (Sweden)

    D. GAVOJDIAN

    2007-10-01

    Full Text Available The aim of this study was to determine some aspects of drinking behaviour in thecold-season. The study was carried out on 10 multiparous cows, housed in a tiedstanchion barn 24 hours per day. During the experiments the following behaviouraspects were monitored: the number of drinking periods per 24 hours and drinkingfrequency. When cows were fed twice a day the average number of drinking periodswas 11, and when cows were fed tree times per day, the average number of drinkingperiods per cow was 12.2 per day. The highest frequency of drinking period in thefirst part of the experiment (one with two meals per day was registered at 10:00and 18:00-19:00 h. When the forages were administrated in three meals three peakswere registered, between 09:00, 15:00 and 20:00 h. During the night time,consumption of water was very low.

  11. STUDY ON RESTING BEHAVIOR IN THREE MONTHS OF AGE CALVES FROM ROMANIAN BLACK AND WHITE BREED DURING WINTER

    Directory of Open Access Journals (Sweden)

    S. ACATINCĂI

    2009-10-01

    Full Text Available The aim of this paper was to measure the main aspects that characterize the resting behavior of three months old calves. During the experiments the following resting behavior aspects were determined: number of resting periods, the length of resting periods. Results showed that in the winter season the total length of laying down periods was 171.5 minutes in the morning, 222.8 minutes in the afternoon and 403.9 minutes during the night. In the winter season calves stood down in 3.7 periods during the morning, 4.4 periods during the afternoon and 2.9 periods during the night. There were significant differences between morning and afternoon (p<0.001, between morning and night (p<0.001 and between afternoon and night (p<0.001 for total time spent lying down. In the winter season the total time spent resting (sleep and rest laying down was 79.7 minutes in the morning, 115.8 minutes in the afternoon and 239.6 minutes during the night. There were significant differences between morning and afternoon (p<0.01, between morning and night (p<0.001 and between afternoon and night (p<0.001 for total time spent resting by calves.

  12. Exploring the relationship between timing of menarche and eating disorder symptoms in black and white adolescent girls

    NARCIS (Netherlands)

    Striegel-Moore, RH; McMahon, RP; Biro, FM; Schreiber, G; Crawford, PB; Voorhees, C

    2001-01-01

    Objective: This study examined the relationship between timing of sexual maturation and eating disorders symptoms in adolescent girls. Method: Data were collected over 10 years for a cohort of 1,213 Black girls and 1,166 White girls who were either 9 or 10 years old at study entry. Annually, girls'

  13. Widening gap in age at muscular dystrophy-associated death between blacks and whites, 1986-2005.

    Science.gov (United States)

    Kenneson, Aileen; Vatave, Ajay; Finkel, Richard

    2010-09-14

    Muscular dystrophies (MDs), characterized by progressive muscle wasting, are associated with 1 in 2,500 deaths in the United States. Although treatments slow the progression, these disorders lead to early death, usually due to cardiac or respiratory failure. We analyzed death record data from 18,315 MD-associated deaths that occurred in the United States in 1986 through 2005 to assess trends in the age at death of people with MDs. From 1986 through 2005, the MD-associated mortality rate did not change among blacks, whites, males, or females. The median age at death among white females with MDs was 12 years higher than among black females. The frequency of reported cardiomyopathy increased among white but not black male decedents with MDs, although cardiomyopathy remained more commonly reported among black males. Among white males, the median age at death increased by 0.2 annually for those with and 1.3 for those without indications of cardiomyopathy. Among black males, the median age at death increased 0.3 years annually among those without reported cardiomyopathy. Among white males, the frequencies of pulmonary failure and pulmonary infection decreased significantly over time. Changes in age at death and reported clinical comorbidities reflect improvements in the treatment of MDs. White males with MDs have shown a greater increase in age at death over time than black males. Contributing factors to this difference might include differences in types of MDs, rates of genetic and environmental modifiers, natural history, socioeconomic factors, and access to and use of treatment options.

  14. Dominance hierarchy and social relationships in a group of captive black-and-white snub-nosed monkeys (Rhinopithecus bieti).

    Science.gov (United States)

    Cui, Liang-Wei; Sun, Qing-Lei; Li, Bao-Guo

    2014-05-01

    Different types of dominance hierarchies reflect different social relationships in primates. In this study, we clarified the hierarchy and social relationships in a one-male unit of captive Rhinopithecus bieti observed between August 1998 and March 1999. Mean frequency of agonistic behaviour among adult females was 0.13 interactions per hour. Adult females exhibited a linear hierarchy with a reversal of 10.9%, indicating an unstable relationship; therefore, R. bieti appears to be a relaxed/tolerant species. The lack of a relationship between the agonistic ratio of the adult male towards adult females and their ranks indicated that males did not show increased aggression towards low-ranking females. Differentiated female affiliative relationships were loosely formed in terms of the male, and to some extent influenced by female estrus, implying that relationships between the male and females is influenced by estrus and not rank alone. A positive correlation between the agonistic ratio of adult females and their ranks showed that the degree to which one female negatively impacted others decreased with reduction in rank. Similarly, a positive correlation between the agonistic ratio of females and differences in rank suggests that a female had fewer negative effects on closely ranked individuals than distantly ranked ones. These data indicate that rank may influence relationships between females. A steeper slope of regression between the agonistic ratio and inter-female rank differences indicated that the extent of the power difference in high-ranking females exerting negative effects on low-ranking ones was larger during the mating season than the birth season, suggesting that rank may influence the mating success of females.

  15. Effects of Body Fat on Weight Concerns, Dating, and Sexual Activity: A Longitudinal Analysis of Black and White Adolescent Girls.

    Science.gov (United States)

    Halpern, Carolyn Tucker; Udry, J. Richard; Suchindran, Chirayath; Campbell, Benjamin

    1999-01-01

    Investigated implications of body-fat differences for dating and sexual activity and implications of heterosexual activity for dieting and weight concerns in adolescent girls. Found that among white girls, and blacks with college-educated mothers, more body fat was associated with lower dating probability, even among non-obese girls. Body fat was…

  16. Influence of Growth and Maintenance Regime of Romanian Black and White Heifers on the Milk Yield at their First Lactation

    Directory of Open Access Journals (Sweden)

    Maria Voiculescu

    2011-05-01

    Full Text Available The goal of this paper is to estimate if the growth regime, expressed by the daily gain of dairy heifers from the birth to their first pregnancy, has any effect on the milk yield in the first 305 days of their first lactation. The daily gain of the heifers was put in relation with the birth year of heifers and with the month of birth, doesn’t matter the year. Significance of differences of indices both for years and months were considered. Farther the effect of differences concerning the heifers’ daily gain upon the body weight and the age at the first successful insemination was discussed as possible factors correcting the influence of growth regime upon the milk yield in the first 305 days of the first heifers’ first lactation.

  17. Selected Differences in the Life Chances of Black and White in the United States. Research Group One, Report No. 17.

    Science.gov (United States)

    Ehrlich, Howard J.

    Tabular data presented in this report comprise: total and black population of the U.S. for every census period from 1790 to 1970, the 50 cities with the largest black population for 1970, an index of residential segregation for 1960, selected views of age and sex, life and death, the educational profile of white and black in 1970, family income…

  18. What's Black and White and Re-Tweeted All Over? Teaching News Literacy in the Digital Age

    Science.gov (United States)

    Loth, Renee

    2012-01-01

    In 2007 the John S. and James L. Knight Foundation placed a major bet on State University of New York at Stony Brook: $1.7-million to enroll 10,000 students in its news-literacy curriculum over five years. Alberto Ibarguen, president and chief executive of the foundation, expected the course to foster "a group of students who would simply…

  19. RACE DIFFERENCES IN DIET QUALITY OF URBAN FOOD-INSECURE BLACKS AND WHITES REVEALS RESLIENCY IN BLACKS

    Science.gov (United States)

    Allen, Allyssa J.; Kuczmarski, Marie Fanelli; Evans, Michele K.; Zonderman, Alan B.; Waldstein, Shari R.

    2015-01-01

    Introduction Evidence from epidemiological studies shows a link between food insecurity and diet intake or quality. However, the moderating effect of race in this relation has not yet been studied. Methods Food insecurity (USDA Food Security Module) and diet quality (Healthy Eating Index-2010; HEI) were measured in 1,741 participants from the Healthy Aging in Neighborhoods of Diversity across the Life Span (HANDLS) study. Data were collected from 2004–2009 and analyzed in 2014. Multivariable regression assessed the interaction of race and food insecurity on HEI scores, adjusting for age, sex, poverty status, single parent status, drug, alcohol, and cigarette use, and co-morbid diseases. Results The interaction of food insecurity and race was significantly associated with diet quality (p=.001). In the absence of food insecurity, HEI scores were similar across race. However, with each food insecurity item endorsed, HEI scores were substantially lower for Whites compared to Blacks. An ad-hoc analysis revealed that Blacks were more likely than Whites to participate in SNAP (p quality. Conclusions Study findings provide the first evidence that the influence of food insecurity on diet quality may be potentiated for Whites, but not Blacks. Additionally, results show that Blacks are more likely to participate in SNAP, and show attendant buffering of the effects of food insecurity on diet quality. These findings may have important implications for understanding how food insecurity affects diet quality differentially by race. PMID:27294760

  20. Progression of coronary artery calcification in black and white women: do the stresses and rewards of multiple roles matter?

    Science.gov (United States)

    Janssen, Imke; Powell, Lynda H; Jasielec, Mateusz S; Matthews, Karen A; Hollenberg, Steven M; Sutton-Tyrrell, Kim; Everson-Rose, Susan A

    2012-02-01

    Black women experience higher rates of cardiovascular disease (CVD) than white women, though evidence for racial differences in subclinical CVD is mixed. Few studies have examined multiple roles (number, perceived stress, and/or reward) in relation to subclinical CVD, or whether those effects differ by race. The aim of this study was to investigate the effects of multiple roles on 2-year progression of coronary artery calcium. Subjects were 104 black and 232 white women (mean age 50.8 years). Stress and reward from four roles (spouse, parent, employee, caregiver) were assessed on five-point scales. Coronary artery calcium progression was defined as an increase of ≥10 Agatston units. White women reported higher rewards from their multiple roles than black women, yet black women showed cardiovascular benefits from role rewards. Among black women only, higher role rewards were related significantly to lower progression of coronary artery calcium, adjusting for body mass index, blood pressure, and other known CVD risk factors. Blacks reported fewer roles but similar role stress as whites; role number and stress were unrelated to coronary artery calcium progression. Rewarding roles may be a novel protective psychosocial factor for progression of coronary calcium among black women.

  1. Examining impulsivity as a moderator of the relationship between body shame and bulimic symptoms in Black and White young women.

    Science.gov (United States)

    Higgins, M K; Lin, Stacy L; Alvarez, Alexandra; Bardone-Cone, Anna M

    2015-06-01

    Impulsivity has been linked to bulimic symptomatology in a number of studies; however, few have examined this relationship among Black women. We investigated the correlations between impulsivity and bulimic symptoms, and tested impulsivity as a moderator of the body shame/bulimic symptoms relationship among a sample of female undergraduates (N=276; 97 Blacks, 179 Whites). These participants provided data on body shame, impulsivity, and bulimic symptoms (EDE-Q binge eating frequency, BULIT-R, EDI-Bulimia). Among Blacks, impulsivity was significantly positively associated with all bulimic symptoms measures; among Whites, impulsivity was only positively correlated with binge eating frequency. Furthermore, among Blacks, the combination of high body shame and high impulsivity was associated with the highest levels of bulimic symptoms; these findings were not observed among Whites. This study highlights the importance of impulsivity and body shame in identifying bulimic symptomatology among Black women. Copyright © 2015 Elsevier Ltd. All rights reserved.

  2. Confirmatory Factor Analysis of a Brief Version of the Zarit Burden Interview in Black and White Dementia Caregivers

    Science.gov (United States)

    Flynn Longmire, Crystal V.; Knight, Bob G.

    2011-01-01

    Purpose of the study: Although the Zarit Burden Interview (ZBI) is one of the most extensively used measures in research for caregiver burden, few researchers have examined its factor structure. Furthermore, though the ZBI has also been used in cross-group comparisons of burden, there have not been studies of whether or not it measures burden…

  3. Obesity Status and Body Satisfaction: Are There Differences between African American College Females at Black and White Universities?

    Science.gov (United States)

    James, Delores C. S.; Bonds, Jennifer R.

    2006-01-01

    The goals of this project were to 1) assess obesity status and body satisfaction among African American college students, and 2) to compare differences in these variables between students at a predominantly white university (PWU) and a historically black college and university (HBCU). Four hundred and two undergraduate females completed a…

  4. Implications of the Institute of Medicine weight gain recommendations for preventing adverse pregnancy outcomes in black and white women.

    Science.gov (United States)

    Caulfield, L E; Stoltzfus, R J; Witter, F R

    1998-01-01

    OBJECTIVES: This study examined the relation between gestational weight gain and risk of delivering a small-for-gestational-age or large-for-gestational-age infant by race, along with the implications of gaining weight according to the Institute of Medicine guidelines. METHODS: Logistic regression methods were used to identify risk factors for small- and large-for-gestational-age births among 2617 Black and 1253 White women delivering at the Johns Hopkins Hospital between 1987 and 1989. RESULTS: Rate of total weight gain was related to risk of small- and large-for-gestational-age births; the relationship differed according to maternal body mass index but not race. No differences in outcome by race were evident for women with low body mass indexes; among those with average or high indexes, however, Black women were at higher risk of small-for-gestational-age births and at lower risk of large-for-gestational-age births. CONCLUSIONS: Having Black women gain at the upper end of the recommended range is unlikely to produce measurable reductions in small-for-gestational-age births. Some beneficial reductions in the risk of large-for-gestational-age births may occur if weight gain recommendations are lowered for average-weight and overweight White women. PMID:9702142

  5. Obesity and the development of insulin resistance and impaired fasting glucose in black and white adolescent girls - A longitudinal study

    NARCIS (Netherlands)

    Klein, DJ; Friedman, LA; Harlan, WR; Barton, BA; Schreiber, GB; Cohen, RM; Harlan, LC; Morrison, JA

    Objective-Age at onset of type 2 diabetes has decreased during the past 20 years, especially in black women. Studies of factors associated with insulin resistance and hyperglycemia in preadolescent and adolescent populations are essential to understanding diabetes development. Research Design and

  6. Do Parents, Teachers, and Psychoeducational Evaluators Agree in Their Perceptions of the Problems of Black and White Emotionally Disturbed Children?

    Science.gov (United States)

    Kaufman, Alan S.; And Others

    1980-01-01

    The most disturbing result was the extent of disagreement in parents' and teachers' perceptions of the problem behaviors of Black emotionally disturbed children. There was agreement in perceptions of White emotionally disturbed children, facilitating communication. High levels of parental involvement are recommended. (Author)

  7. Do Black and White Youths Differ in Levels of Psychopathic Traits? A Meta-Analysis of the Psychopathy Checklist Measures

    Science.gov (United States)

    McCoy, Wendy K.; Edens, John F.

    2006-01-01

    Putative ethnic group differences in various forms of psychopathology may have important theoretical, clinical, and policy implications. Recently, it has been argued that individuals of African descent are more likely to be psychopathic than those of European descent (R. Lynn, 2002). Preliminary evidence from the Psychopathy Checklist: Youth…

  8. Differing patterns of brain structural abnormalities between black and white patients with their first episode of psychosis.

    LENUS (Irish Health Repository)

    Morgan, K D

    2010-07-01

    African-Caribbean and black African people living in the UK are reported to have a higher incidence of diagnosed psychosis compared with white British people. It has been argued that this may be a consequence of misdiagnosis. If this is true they might be less likely to show the patterns of structural brain abnormalities reported in white British patients. The aim of this study therefore was to investigate whether there are differences in the prevalence of structural brain abnormalities in white and black first-episode psychosis patients.

  9. Race Differences in Diet Quality of Urban Food-Insecure Blacks and Whites Reveals Resiliency in Blacks.

    Science.gov (United States)

    Allen, Allyssa J; Kuczmarski, Marie Fanelli; Evans, Michele K; Zonderman, Alan B; Waldstein, Shari R

    2016-12-01

    Evidence from epidemiological studies shows a link between food insecurity and diet intake or quality. However, the moderating effect of race in this relation has not yet been studied. Food insecurity (USDA Food Security Module) and diet quality (Healthy Eating Index-2010; HEI) were measured in 1741 participants from the Healthy Aging in Neighborhoods of Diversity across the Life Span (HANDLS) study. Data were collected from 2004 to 2009 and analyzed in 2014. Multivariable regression assessed the interaction of race and food insecurity on HEI scores, adjusting for age, sex, poverty status, single parent status, drug, alcohol and cigarette use, and comorbid diseases. The interaction of food insecurity and race was significantly associated with diet quality (p = 0.001). In the absence of food insecurity, HEI scores were similar across race. However, with each food insecurity item endorsed, HEI scores were substantially lower for Whites compared to Blacks. An ad hoc analysis revealed that Blacks were more likely than Whites to participate in SNAP (p food insecurity with diet quality. Study findings provide the first evidence that the influence of food insecurity on diet quality may be potentiated for Whites, but not Blacks. Additionally, results show that Blacks are more likely to participate in SNAP and show attendant buffering of the effects of food insecurity on diet quality. These findings may have important implications for understanding how food insecurity affects diet quality differentially by race.

  10. Understanding the Different Realities, Experience, and Use of Self-Esteem between Black and White Adolescent Girls

    Science.gov (United States)

    Adams, Portia E.

    2010-01-01

    African American adolescent females possess higher self-esteem than any other racial or ethnic adolescent female group. This article tests two popular empirically supported explanations for Black high self-esteem: "contingency of self-esteem theory" and the "locus of control model". This article builds on past research to illustrate the specific…

  11. Reading Playboy for the articles: the graying of rape myths in black and white text, 1953 to 2003.

    Science.gov (United States)

    Kettrey, Heather Hensman

    2013-08-01

    This longitudinal investigation analyzes the manner in which rape myths are conveyed through textual material published in Playboy. Results indicate that Playboy (a) portrays rape as a gender-neutral issue, ignoring patriarchal roots of sexual violence against women, and (b) promulgates ambiguous discourse, which is equally likely to endorse and refute rape myths. Interestingly, readers' contributions are most often the source of refutations of rape myths. Overall, findings suggest that little progress has been made over time in deconstructing rape myths promulgated to men, as this particular men's publication has consistently painted a gray picture in which refutations have remained unsuccessful in disempowering rape myths.

  12. "A Sort of Black and White Past and Present Thing": High School Students' Subject Positions on South Africa's Recent Past

    Science.gov (United States)

    Ferreira, Ana

    2016-01-01

    This article examines the discursive positions South African high school students take up in response to a teaching intervention that invites them to historicize their identities. It thus seeks to contribute to the growing body of education research on how to meaningfully engage young people in post-conflict societies with their recent past.…

  13. Dealing with diversity: middle-class family households and the issue of 'black' and 'white' schools in Amsterdam

    NARCIS (Netherlands)

    Boterman, W.R.

    2013-01-01

    The urban middle classes often celebrate the diversity of their neighbourhood. As soon as they have children, however, the desire to display symbolic capital may conflict with the need to reproduce cultural capital through the educational system. In the ethnically diverse Amsterdam schooling

  14. Researches on Rumination Behavior in Six Months of Age Calves from Romanian Black and White Breed Fed Using Different Feed Space Allowance

    Directory of Open Access Journals (Sweden)

    Iulian Tripon

    2011-10-01

    Full Text Available The aim of this paper was to measure the main aspects that characterize the rumination behavior in six months old calves fed using three different feed spaces allowance. During the experiments the following rumination behavior aspects were determined: number of rumination periods, the length of rumination periods and the total length of rumination periods. Results showed that calves spent ruminating, on average, only 96.4 minutes in the morning, 176 minutes in the afternoon and 262.6 minutes during the night when the length of feeding space was 0.6 m per calf. Calves spent ruminating 124.2 minutes during the morning, 173.6 minutes during the afternoon and 243.4 minutes during the night when the length of the feeding space was 0.32 m per calf. Calves spent ruminating 106.2 minutes during the morning, 134.2 minutes during the afternoon and 286.4 minutes during the night when the length of the feeding space was 0.28 m per calf. The total time spent ruminating by calves was 535 minutes when the length of feeding space was 0.6 m per calf, 541 minutes when the length of feeding space was 0.32 per calf and 527 minutes when the length of the feeding space was 0.28 per calf. There were no significant differences (p>0.05 for total time spent ruminating by calves between the three experimental variants.

  15. Medical advice and diabetes self-management reported by Mexican-American, Black- and White-non-Hispanic adults across the United States

    OpenAIRE

    Vaccaro, Joan A; Feaster, Daniel J; Lobar, Sandra L; Baum, Marianna K; Magnus, Marcia; Huffman, Fatma G

    2012-01-01

    Abstract Background Diabetes has reached epidemic proportions in the United States, particularly among minorities, and if improperly managed can lead to medical complications and death. Healthcare providers play vital roles in communicating standards of care, which include guidance on diabetes self-management. The background of the client may play a role in the patient-provider communication process. The aim of this study was to determine the association between medical advice and diabetes se...

  16. From black and white to shades of grey. A longitudinal study of teachers' perspectives on teaching sociocultural and subjective aspects of science

    Science.gov (United States)

    Leden, Lotta; Hansson, Lena; Redfors, Andreas

    2017-07-01

    Traditional school science has been described as focused on indisputable facts where scientific processes and factors affecting these processes become obscured or left undiscussed. In this article, we report on teachers' perspectives on the teaching of sociocultural and subjective aspects of the nature of science (NOS) as a way to accomplish a more nuanced science teaching in Swedish compulsory school. The teachers ( N = 6) took part in a longitudinal study on NOS and NOS teaching that spanned 3 years. The data consists of recorded and transcribed focus group discussions from all 3 years. In the analysis, the transcripts were searched for teachers' suggestions of issues, relevant for teaching in compulsory school, as well as opportunities and challenges connected to the teaching of these issues. The results of the analysis show that (a) the number of suggested issues increased over the years, (b) teachers' ways of contextualizing the issues changed from general and unprecise to more tightly connected to socio-scientific or scientific contexts, and (c) the number of both opportunities and challenges related to NOS teaching increased over the years. The most evident changes occurred from the beginning of year 2 when the focus group discussions became more closely directed towards concrete teaching activities. Tensions between the opportunities and challenges are discussed as well as how these can be met, and made use of, in science teacher education.

  17. Eating attitudes, body image satisfaction and self-esteem of South African Black and White male adolescents and their perception of female body silhouettes.

    Science.gov (United States)

    Gitau, Tabither M; Micklesfield, Lisa K; Pettifor, John M; Norris, Shane A

    2014-01-01

    This cross-sectional study of urban high schools in Johannesburg, South Africa, sought to examine eating attitudes, body image and self-esteem among male adolescents (n = 391). Anthropometric measurements, Eating Attitudes Test-26 (EAT-26), Rosenberg self-esteem, body image satisfaction and perception of females were collected at age 13, 15 and 17 years. Descriptive analysis was done to describe the sample, and non-parametric Wilcoxon Mann-Whitney test was used to test for significant differences between data that were not normally distributed (EAT-26). Spearman's rank correlation coefficient analyses were conducted to test for associations between self-esteem scores and eating attitudes, body mass indices and body image satisfaction scores. To assess the differences between groups that were normally distributed chi-square tests were carried out. Ethnic differences significantly affected adolescent boys' body mass index (BMI), eating attitudes and self-esteem; White boys had higher self-esteem, BMI and normal eating attitudes than the Black boys did. BMI was positively associated with self-esteem (p = 0.01, r = 0.134) and negatively with dieting behaviour in White boys (p = 0.004, r = -0.257), and with lower EAT-26 bulimic and oral control scores in Black boys. In conclusion, the findings highlight ethnic differences and a need to better understand cultural differences that influence adolescent attitudes and behaviour.

  18. Changes in self-esteem in black and white girls between the ages of 9 and 14 years - The NHLBI growth and health study

    NARCIS (Netherlands)

    Brown, KM; McMahon, RP; Biro, FM; Crawford, P; Schreiber, GB; Similo, SL; Waclawiw, M; Striegel-Moore, R

    Purpose: We examined changes in self-esteem and feelings of competence with physical appearance and social acceptance over approximately 5 years in 1166 white and 1213 black girls, aged 9 and 10 years at baseline. Methods: Maturation stage and body mass index (BMI) were assessed annually. Biennially

  19. The role of adolescent behaviors in the female-male disparity in obesity incidence in US black and white young adults.

    Science.gov (United States)

    Robinson, Whitney R; Stevens, June; Kaufman, Jay S; Gordon-Larsen, Penny

    2010-07-01

    In the United States, black women are at much greater risk for obesity than black men. We explored whether adolescent behaviors (family dinners, hours of television, playing sports with mother, playing sports with father, bouts of physical activity) were associated with gender disparity in 6-year obesity incidence in young adulthood. We used data from the nationally representative National Longitudinal Study of Adolescent Health to examine adolescent behaviors in nonimmigrant black (n = 1,503) and white (n = 4,452) youths in 1994-95 (aged 11-19 years) and 1995-96 (aged 12-20). We assessed gender disparity in obesity incidence (female incidence minus male incidence) during young adulthood (2001-02; aged 18-26). Standardized gender disparities were calculated using race- and gender-stratified, covariate-adjusted logistic regression models in which males and females were set to the same distributions of adolescent behaviors. In adolescence, black females reported less leisure-time physical activity and lower likelihood of playing sports with either parent compared with black males. Setting adolescent behaviors equal for black males and females did not reduce the estimated gender disparity in obesity incidence (nonstandardized: 9.8 percentage points (95% confidence interval (CI): 4.5, 15.1); fully standardized: 10.2 percentage points (5.2, 15.2)). There was little gender disparity in whites before or after adjustments. To our knowledge, this is the first study to examine to what extent behavioral differences during adolescence might account for gender disparity in obesity incidence in black young adults. Male-female differences in these adolescent behaviors did not appear to underlie the gender gap in young adult obesity.

  20. Changes in self-esteem in black and white girls between the ages of 9 and 14 years. The NHLBI Growth and Health Study.

    Science.gov (United States)

    Brown, K M; McMahon, R P; Biro, F M; Crawford, P; Schreiber, G B; Similo, S L; Waclawiw, M; Striegel-Moore, R

    1998-07-01

    We examined changes in self-esteem and feelings of competence with physical appearance and social acceptance over approximately 5 years in 1166 white and 1213 black girls, aged 9 and 10 years at baseline. Maturation stage and body mass index (BMI) were assessed annually. Biennially girls completed Harter's Self-Perception Profile for children. Changes were analyzed in the context of race, sexual maturation, BMI, and household income. Longitudinal regression models were used to compare trends with age in global self-worth, physical appearance, and social acceptance. Mean global self-worth showed little change over ages 9-14 years in blacks (p = 0.09) but decreased in whites (p physical appearance scores for both races declined between ages 9 and 14 years (blacks, p social acceptance scores increased for both races between ages 9 and 14 years (blacks, p physical appearance scores. Self-worth, physical appearance, and social acceptance scores decreased with increasing BMI. Decreases in physical appearance and social acceptance scores with increasing BMI were smaller in blacks than in whites (p social acceptance scores depended on BMI (p physical appearance compared to white girls may be racial differences in attitudes toward physical appearance and obesity.

  1. AIDS in black and white: the influence of newspaper coverage of HIV/AIDS on HIV/AIDS testing among African Americans and White Americans, 1993-2007.

    Science.gov (United States)

    Stevens, Robin; Hornik, Robert C

    2014-01-01

    This study examined the effect of newspaper coverage of HIV/AIDS on HIV testing behavior in a U.S. population. HIV testing data were taken from the Center for Disease Control and Prevention's National Behavioral Risk Factor Surveillance System from 1993 to 2007 (N = 265,557). The authors content-analyzed news stories from 24 daily newspapers and 1 wire service during the same time period. The authors used distributed lagged regression models to estimate how well HIV/AIDS newspaper coverage predicted later HIV testing behavior. Increases in HIV/AIDS newspaper coverage were associated with declines in population-level HIV testing. Each additional 100 HIV/AIDS-related newspaper stories published each month was associated with a 1.7% decline in HIV testing levels in the subsequent month. This effect differed by race, with African Americans exhibiting greater declines in HIV testing subsequent to increased news coverage than did Whites. These results suggest that mainstream newspaper coverage of HIV/AIDS may have a particularly deleterious effect on African Americans, one of the groups most affected by the disease. The mechanisms driving the negative effect deserve further investigation to improve reporting on HIV/AIDS in the media.

  2. Differences in morning-evening type and sleep duration between Black and White adults: Results from a propensity-matched UK Biobank sample.

    Science.gov (United States)

    Malone, Susan Kohl; Patterson, Freda; Lozano, Alicia; Hanlon, Alexandra

    2017-01-01

    Biological evidence suggests that ethno-racial differences in morning-evening type are possible, whereby Blacks may be more likely to be morning type compared to Whites. However, population-level evidence of ethno-racial difference in morning-evening type is limited. In an earlier study, we reported that morning type was more prevalent in Blacks compared to Whites in the United Kingdom (UK) Biobank cohort (N = 439 933). This study aimed to determine if these ethno-racial differences persisted after accounting for an even broader range of social, environmental and individual characteristics and employing an analytic approach that simulates randomization in observational data, propensity score modeling. Data from UK Biobank participants whose self-identified race/ethnicity was Black/Black British or White; who did not report daytime napping, shift work or night shift work; who provided full mental health information; and who were identified using propensity score matching were used (N = 2044). Each sample was strongly matched across all social, environmental and individual characteristics as indicated by absolute standardized mean differences morning, intermediate and evening type among Blacks (n = 1022) was compared with a matched sample of Whites (n = 1022) using multinomial logistic regression models. Blacks had a 62% greater odds of being morning type [odds ratio (OR) = 1.620, 95% confidence interval (CI): 1.336-1.964, p morning type and short nocturnal sleep in Blacks compared to Whites is not fully explained by a wide range of social and environmental factors. If sleep is an upstream determinant of health, these data suggest that ethno-racially targeted public health sleep intervention strategies are needed.

  3. Differences in morning–evening type and sleep duration between Black and White adults: Results from a propensity-matched UK Biobank sample

    Science.gov (United States)

    Malone, Susan Kohl; Patterson, Freda; Lozano, Alicia; Hanlon, Alexandra

    2017-01-01

    Biological evidence suggests that ethno-racial differences in morning–evening type are possible, whereby Blacks may be more likely to be morning type compared to Whites. However, population-level evidence of ethno-racial difference in morning–evening type is limited. In an earlier study, we reported that morning type was more prevalent in Blacks compared to Whites in the United Kingdom (UK) Biobank cohort (N = 439 933). This study aimed to determine if these ethno-racial differences persisted after accounting for an even broader range of social, environmental and individual characteristics and employing an analytic approach that simulates randomization in observational data, propensity score modeling. Data from UK Biobank participants whose self-identified race/ethnicity was Black/Black British or White; who did not report daytime napping, shift work or night shift work; who provided full mental health information; and who were identified using propensity score matching were used (N = 2044). Each sample was strongly matched across all social, environmental and individual characteristics as indicated by absolute standardized mean differences morning, intermediate and evening type among Blacks (n = 1022) was compared with a matched sample of Whites (n = 1022) using multinomial logistic regression models. Blacks had a 62% greater odds of being morning type [odds ratio (OR) = 1.620, 95% confidence interval (CI): 1.336–1.964, p morning type and short nocturnal sleep in Blacks compared to Whites is not fully explained by a wide range of social and environmental factors. If sleep is an upstream determinant of health, these data suggest that ethno-racially targeted public health sleep intervention strategies are needed. PMID:28488939

  4. Can Racial Disparity in Health between Black and White Americans Be Attributed to Racial Disparities in Body Weight and Socioeconomic Status?

    Science.gov (United States)

    Kahng, Sang Kyoung

    2010-01-01

    Few studies have examined to what extent racial disparities in chronic health conditions (CHCs) are attributable to racial differences in body weight (measured as body mass index [BMI]) and socioeconomic status (SES) among older adults. To address this gap, using longitudinal data from the Health and Retirement Study, the current study examined…

  5. Jim Crow and estrogen-receptor-negative breast cancer: US-born black and white non-Hispanic women, 1992-2012.

    Science.gov (United States)

    Krieger, Nancy; Jahn, Jaquelyn L; Waterman, Pamela D

    2017-01-01

    It is unknown whether Jim Crow-i.e., legal racial discrimination practiced by 21 US states and the District of Columbia and outlawed by the US Civil Rights Act in 1964-affects US cancer outcomes. We hypothesized that Jim Crow birthplace would be associated with higher risk of estrogen-receptor-negative (ER-) breast tumors among US black, but not white, women and also a higher black versus white risk for ER- tumors. We analyzed data from the SEER 13 registry group (excluding Alaska) for 47,157 US-born black non-Hispanic and 348,514 US-born white non-Hispanic women, aged 25-84 inclusive, diagnosed with primary invasive breast cancer between 1 January 1992 and 31 December 2012. Jim Crow birthplace was associated with increased odds of ER- breast cancer only among the black, not white women, with the effect strongest for women born before 1965. Among black women, the odds ratio (OR) for an ER- tumor, comparing women born in a Jim Crow versus not Jim Crow state, equaled 1.09 (95% confidence interval [CI] 1.06, 1.13), on par with the OR comparing women in the worst versus best census tract socioeconomic quintiles (1.15; 95% CI 1.07, 1.23). The black versus white OR for ER- was higher among women born in Jim Crow versus non-Jim Crow states (1.41 [95% CI 1.13, 1.46] vs. 1.27 [95% CI 1.24, 1.31]). The unique Jim Crow effect for US black women for breast cancer ER status underscores why analysis of racial/ethnic inequities must be historically contextualized.

  6. Left ventricular mass and ventricular remodeling among Hispanic subgroups compared with non-Hispanic blacks and whites: MESA (Multi-ethnic Study of Atherosclerosis).

    Science.gov (United States)

    Rodriguez, Carlos J; Diez-Roux, Ana V; Moran, Andrew; Jin, Zhezhen; Kronmal, Richard A; Lima, Joao; Homma, Shunichi; Bluemke, David A; Barr, R Graham

    2010-01-19

    The purpose of this study was to examine the prevalence of left ventricular hypertrophy (LVH) and left ventricular (LV) remodeling patterns within Hispanic subgroups compared with non-Hispanic whites in the MESA (Multi-Ethnic Study of Atherosclerosis). Hispanics are the largest and fastest-growing ethnic minority in the U.S., but there are no data on LVH and LV geometry among Hispanic subgroups. Cardiac magnetic resonance imaging was performed in 4,309 men and women age 45 to 84 years without clinical cardiovascular disease. Hispanics were categorized into subgroups based on self-reported ancestry. LVH was defined as the upper 95th percentile of indexed LV mass in a reference normotensive, nondiabetic, nonobese population, and LV remodeling according to the presence/absence of LVH and abnormal/normal LV mass to LV end-diastolic volume ratio. Among Hispanic participants, 574 were of Mexican origin, 329 were of Caribbean origin, and 161 were of Central/South American origin. On unadjusted analysis, only Caribbean-origin Hispanics (prevalence ratio = 1.2; 95% confidence interval [CI]: 1.03 to 1.4) had greater prevalence of hypertension than non-Hispanic whites. Hispanic subgroups were more likely to have LVH than non-Hispanic whites after adjustment for hypertension and other covariates (Caribbean-origin Hispanics = odds ratio [OR]: 1.8, 95% CI: 1.1 to 3.0; Mexican-origin Hispanics = OR: 2.2, 95% CI: 1.4 to 3.3; Central/South Americans = OR: 1.5, 95% CI: 0.7 to 3.1). All Hispanic subgroups also had a higher prevalence of concentric and eccentric hypertrophy compared with non-Hispanic whites (p < 0.001). Caribbean-origin Hispanics had a higher prevalence of LVH and abnormal LV remodeling compared with non-Hispanic whites. A higher prevalence of LVH and abnormal LV remodeling was also observed among Mexican-origin Hispanics, despite a lower prevalence of hypertension. Differences among Hispanic subgroups regarding LVH and LV remodeling should be taken into account when evaluating cardiovascular risk in this population. Copyright (c) 2010 American College of Cardiology Foundation. Published by Elsevier Inc. All rights reserved.

  7. Appraisal, Coping, and Social Support as Mediators of Well-Being in Black and White Family Caregivers of Patients with Alzheimer's Disease.

    Science.gov (United States)

    Haley, William E.; And Others

    1996-01-01

    Family caregivers of patients with Alzheimer's disease (AD) commonly have high levels of psychological distress. Black caregivers often report less depression than white caregivers, but the process underlying this difference is poorly understood. With the use of a stress process model, 123 white and 74 black family caregivers of patients with AD…

  8. Individual and neighborhood-level socioeconomic characteristics in relation to smoking prevalence among black and white adults in the Southeastern United States: a cross-sectional study.

    Science.gov (United States)

    Cohen, Sarah S; Sonderman, Jennifer S; Mumma, Michael T; Signorello, Lisa B; Blot, William J

    2011-11-21

    Low individual-level socioeconomic status (SES) is associated with higher prevalence of cigarette smoking. Recent work has examined whether neighborhood-level SES may affect smoking behavior independently from individual-level measures. However, few comparisons of neighborhood-level effects on smoking by race and gender are available. Cross-sectional data from adults age 40-79 enrolled in the Southern Community Cohort Study from 2002-2009 (19, 561 black males; 27, 412 black females; 6, 231 white males; 11, 756 white females) were used in Robust Poisson regression models to estimate prevalence ratios (PRs) and 95% confidence intervals (CI) for current smoking in relation to individual-level SES characteristics obtained via interview and neighborhood-level SES characteristics represented by demographic measures from US Census block groups matched to participant home addresses. Several neighborhood-level SES characteristics were modestly associated with increased smoking after adjustment for individual-level factors including lower percentage of adults with a college education and lower percentage of owner-occupied households among blacks but not whites; lower percentage of households with interest, dividends, or net rental income among white males; and lower percentage of employed adults among black females. Lower neighborhood-level SES is associated with increased smoking suggesting that cessation programs may benefit from targeting higher-risk neighborhoods as well as individuals.

  9. Direct-to-consumer advertising in black and white: racial differences in placement patterns of print advertisements for health products and messages.

    Science.gov (United States)

    Crawley, LaVera M; Hisaw, Lisa; Illes, Judy

    2009-01-01

    If direct-to-consumer advertising (DTCA) increases consumer participation in healthcare, then it may provide a useful strategy for addressing health disparities, in part, where patient-level barriers have contributed to such disparities. However, this presumes equitable access to DTCA. Using mixed methods, we explored advertisement patterns in matched African American and general audience magazines across a range of genres and ad types. Results suggest no significant differences in ad frequencies by race. However other meaningful categorical and qualitative differences were found, suggesting that advertisers may fall short in maximizing DTCA as an adjunctive strategy for empowering populations at risk for health disparities.

  10. Medical advice and diabetes self-management reported by Mexican-American, Black- and White-non-Hispanic adults across the United States

    Directory of Open Access Journals (Sweden)

    Vaccaro Joan A

    2012-03-01

    Full Text Available Abstract Background Diabetes has reached epidemic proportions in the United States, particularly among minorities, and if improperly managed can lead to medical complications and death. Healthcare providers play vital roles in communicating standards of care, which include guidance on diabetes self-management. The background of the client may play a role in the patient-provider communication process. The aim of this study was to determine the association between medical advice and diabetes self care management behaviors for a nationally representative sample of adults with diabetes. Moreover, we sought to establish whether or not race/ethnicity was a modifier for reported medical advice received and diabetes self-management behaviors. Methods We analyzed data from 654 adults aged 21 years and over with diagnosed diabetes [130 Mexican-Americans; 224 Black non-Hispanics; and, 300 White non-Hispanics] and an additional 161 with 'undiagnosed diabetes' [N = 815(171 MA, 281 BNH and 364 WNH] who participated in the National Health and Nutrition Examination Survey (NHANES 2007-2008. Logistic regression models were used to evaluate whether medical advice to engage in particular self-management behaviors (reduce fat or calories, increase physical activity or exercise, and control or lose weight predicted actually engaging in the particular behavior and whether the impact of medical advice on engaging in the behavior differed by race/ethnicity. Additional analyses examined whether these relationships were maintained when other factors potentially related to engaging in diabetes self management such as participants' diabetes education, sociodemographics and physical characteristics were controlled. Sample weights were used to account for the complex sample design. Results Although medical advice to the patient is considered a standard of care for diabetes, approximately one-third of the sample reported not receiving dietary, weight management, or physical activity self-management advice. Participants who reported being given medical advice for each specific diabetes self-management behaviors were 4-8 times more likely to report performing the corresponding behaviors, independent of race. These results supported the ecological model with certain caveats. Conclusions Providing standard medical advice appears to lead to diabetes self-management behaviors as reported by adults across the United States. Moreover, it does not appear that race/ethnicity influenced reporting performance of the standard diabetes self-management behavior. Longitudinal studies evaluating patient-provider communication, medical advice and diabetes self-management behaviors are needed to clarify our findings.

  11. Document Image Processing: Going beyond the Black-and-White Barrier. Progress, Issues and Options with Greyscale and Colour Image Processing.

    Science.gov (United States)

    Hendley, Tom

    1995-01-01

    Discussion of digital document image processing focuses on issues and options associated with greyscale and color image processing. Topics include speed; size of original document; scanning resolution; markets for different categories of scanners, including photographic libraries, publishing, and office applications; hybrid systems; data…

  12. Lower extremity physical performance and hip bone mineral density in elderly black and white men and women : cross-sectional associations in the Health ABC Study

    NARCIS (Netherlands)

    Taaffe, Dennis R; Simonsick, Eleanor M; Visser, Marjolein; Volpato, Stefano; Nevitt, Michael C; Cauley, Jane A; Tylavsky, Frances A; Harris, Tamara B

    2003-01-01

    BACKGROUND: Aging is characterized by declines in physical capacity and bone mineral density (BMD), both of which contribute to increased risk for fracture. However, it is unclear if these factors coexist or are independent in elderly people, and if a relationship does exist, whether it varies by

  13. The impact of sociodemographic factors and PSA screening among low-income Black and White men: data from the Southern Community Cohort Study.

    Science.gov (United States)

    Moses, K A; Zhao, Z; Bi, Y; Acquaye, J; Holmes, A; Blot, W J; Fowke, J H

    2017-12-01

    Variation in PSA screening is a potential source of disparity in prostate cancer survival, particularly among underserved populations. We sought to examine the impact of race and socioeconomic status (SES) on receipt of PSA testing among low-income men. Black (n=22 167) and White (n=9588) men aged ⩾40 years completed a baseline questionnaire from 2002 to 2009 as part of the Southern Community Cohort Study. Men reported whether they had ever received PSA testing and had testing within the prior 12 months. To evaluate the associations between SES, race and receipt of PSA testing, odds ratios (ORs) and 95% confidence intervals (CIs) were estimated from the multivariable logistic models where age, household income, insurance status, marital status, body mass index and educational level were adjusted. Black men were younger, had a lower income, less attained education and were more likely to be unmarried and uninsured (all PPSA testing rose from 50 more likely than Blacks to have received testing. Lower SES was significantly associated with less receipt of PSA testing in both groups. After adjustment for SES, White men had significantly lower odds of PSA testing (OR 0.81; 95% CI: 0.76-0.87). Greater PSA testing among White than Black men over the age of 50 years in this low-income population appears to be mainly a consequence of SES. Strategies for PSA screening may benefit from tailoring to the social circumstances of the men being screened.

  14. Food insecurity and self-reported hypertension among Hispanic, black, and white adults in 12 states, Behavioral Risk Factor Surveillance System, 2009.

    Science.gov (United States)

    Irving, Shalon M; Njai, Rashid S; Siegel, Paul Z

    2014-09-18

    Food insecurity is positively linked to risk of hypertension; however, it is not known whether this relationship persists after adjustment for socioeconomic position (SEP). We examined the association between food insecurity and self-reported hypertension among adults aged 35 or older (N = 58,677) in 12 states that asked the food insecurity question in their 2009 Behavioral Risk Factor Surveillance System questionnaire. After adjusting for SEP, hypertension was more common among adults reporting food insecurity (adjusted prevalence ratio, 1.27; 95% confidence interval, 1.19-1.36). Our study found a positive relationship between food insecurity and hypertension after adjusting for SEP and other characteristics.

  15. Prevalence and cardiometabolic associations of the glucocorticoid receptor gene polymorphisms N363S and BclI in obese and non-obese black and white Mississippians.

    Science.gov (United States)

    Melcescu, Eugen; Griswold, Michael; Xiang, Lianbin; Belk, Sheila; Montgomery, Denise; Bray, Marilyn; Del Ben, Kevin S; Uwaifo, Gabriel I; Marshall, Gailen D; Koch, Christian A

    2012-01-01

    Polymorphisms (SNP) in the glucocorticoid receptor (GR) gene can alter sensitivity to glucocorticoids. Previous studies of the N363S and BclI SNP in the GR gene have shown a metabolic syndrome phenotype in mostly non-African populations. The obesity phenotype of African Americans (AA) seems to be more severe than that of Caucasians. We aimed to assess the prevalence of N363S and BclI in obese and non-obese Caucasian (n=26) and African (n=23) Mississippians (age: 23-63 years) to investigate associations with body composition (body mass index/BMI, waist-to-hip ratio), metabolic parameters (salivary cortisol, fasting glucose and insulin, hemoglobin A1C, fructosamine, HOMA-IR index), and psychological stress perception (blood pressure/BP, perceived stress scale/PSS). All subjects were homozygous for wildtype N363N. BclI polymorphism genotype frequencies among the 23 AA were: homozygous CC (57%), GG (4%), and heterozygous CG (39%), and among the 26 white women: homozygous CC (35%), GG (19%), and heterozygous CG (46%). Linear and logistic regression analyses including a parsimonious model identified BMI as a statistically significant parameter between the two ethnic groups (BMI was 3.13 kg/m2 higher in AA). Within the AA group, BMI, waist-to-hip ratio, log (HOMA-IR), PSS scores, BP, and hyperlipidemia showed no statistically significant relationships for the BclI polymorphism. PSS scores were 15.2 for AA vs. 14.7 for white women (normal mean: 14.7 vs. 12.8). Black Mississippians have a higher BMI than whites, which may be related to the presence of the BclI polymorphism and increased glucocorticoid sensitivity. Although more blacks (52%) than whites (38%) had elevated BP, PSS scores in both groups suggest that a high BMI is not regarded as abnormal or stressful. This might negatively impact behavior change regarding lifestyle modifications with increased physical activity and healthier food choices. Larger studies, particularly in African populations, are needed to better define metabolic and psychological characteristics in relation to the N363S and BclI GR gene polymorphisms.

  16. A desigualdade no “topo”: empregadores negros e brancos no mercado de trabalho brasileiro = Inequality on the top: black and white employers in Brazilian job market

    Directory of Open Access Journals (Sweden)

    Nunes, Jordão Horta

    2016-01-01

    Full Text Available Os empregadores, em razão de sua posição no binômio capital-trabalho, ocupariam provavelmente estratos de remuneração mais alta. No entanto, há desníveis de rendimentos, como ocorre entre trabalhadores brancos e negros, em que estes se tornam empregadores preponderantemente em setores menos privilegiados e ocupações com alto índice de informalidade, em pequenos empreendimentos com menor estabilidade. Este artigo a apresenta um breve perfil de empregadores negros e brancos no Brasil; b demonstra as desigualdades de inserção na estrutura do mercado de trabalho e c mensura os diferenciais médios de renda a fim de determinar o peso de fatores produtivos e da discriminação racial sobre a renda média dos empregadores estratificados por raça e sexo. Com base na análise quantitativa, empregando o método de decomposição de Oaxaca-Blinder, sustenta-se que existe uma diferença significativa de rendimentos entre estratos orientados por raça e sexo de empregadores que não pode ser creditada unicamente a fatores associados, como nível de escolaridade, experiência ou diferentes inserções ocupacionais, mas provém de um resíduo não explicado que é atribuído à discriminação de raça ou sexo

  17. Climate change in Canadian forests: Effect of global warming and CO2 fertilization on natural populations of black and white spruce

    Science.gov (United States)

    Nelson, E. A.; Thomas, S. C.

    2007-12-01

    Global increases in temperature and atmospheric CO2 concentration are predicted to enhance tree growth in the short term, but studies of current impacts of climate change on Canada's forests are limited. This study examined the effects of increasing temperature and atmospheric CO2 concentration on tree ring growth in west-central Manitoba and northern Ontario, sampling white spruce (Picea glauca) and black spruce (Picea mariana), respectively. Over 50 tree cores from each site were sampled, analysed for ring-width, cross-dated and detrended, generating a ~100 y chronology for each population. We found a positive correlation between ring-width increment and spring temperatures (April-May: p<0.005) in Ontario. In Manitoba, however, we found a negative correlation between summer temperatures (Jul-Aug: p<0.005) and ring-width increment coincident with a positive relationship with summer precipitation (July: p<0.03). We examined the residuals following a regression with temperature for a positive trend over time, which has been interpreted in prior studies as evidence for a CO2 fertilization effect. We detected no such putative CO2 fertilization signal in either spruce population. Our results suggest that temperature-limited lowland black spruce communities may respond positively to moderate warming, but that water-limited upland white spruce communities may suffer from drought stress under high temperature conditions. Neither population appears to benefit from increasing CO2 availability.

  18. An investigation of the social identity model of collective action and the 'sedative' effect of intergroup contact among Black and White students in South Africa.

    Science.gov (United States)

    Cakal, Huseyin; Hewstone, Miles; Schwär, Gerhard; Heath, Anthony

    2011-12-01

    Two studies investigated the role of intergroup contact in predicting collective action tendencies along with three key predictors proposed by the social identity model of collective action (SIMCA; Van Zomeren, Postmes, & Spears, 2008). Study 1 (N= 488 Black South African students) tested whether social identity would positively, whereas intergroup contact would negatively predict collective action and support for policies benefiting the ingroup. Study 2 (N= 244 White South African students) predicted whether social identity would positively predict collective action benefiting the ingroup, and intergroup contact would positively predict support for policies to benefit the Black outgroup. Both studies yielded evidence in support of the predictive power of social identity and contact on collective action and policy support. Additionally, Study 1 confirmed that intergroup contact moderated the effects of social identity on relative deprivation, and relative deprivation on collective action. Overall findings support an integration of SIMCA and intergroup contact theory, and provide a fuller understanding of the social psychological processes leading to collective action. ©2011 The British Psychological Society.

  19. Medical advice and diabetes self-management reported by Mexican-American, Black- and White-non-Hispanic adults across the United States.

    Science.gov (United States)

    Vaccaro, Joan A; Feaster, Daniel J; Lobar, Sandra L; Baum, Marianna K; Magnus, Marcia; Huffman, Fatma G

    2012-03-12

    Diabetes has reached epidemic proportions in the United States, particularly among minorities, and if improperly managed can lead to medical complications and death. Healthcare providers play vital roles in communicating standards of care, which include guidance on diabetes self-management. The background of the client may play a role in the patient-provider communication process. The aim of this study was to determine the association between medical advice and diabetes self care management behaviors for a nationally representative sample of adults with diabetes. Moreover, we sought to establish whether or not race/ethnicity was a modifier for reported medical advice received and diabetes self-management behaviors. We analyzed data from 654 adults aged 21 years and over with diagnosed diabetes [130 Mexican-Americans; 224 Black non-Hispanics; and, 300 White non-Hispanics] and an additional 161 with 'undiagnosed diabetes' [N = 815(171 MA, 281 BNH and 364 WNH)] who participated in the National Health and Nutrition Examination Survey (NHANES) 2007-2008. Logistic regression models were used to evaluate whether medical advice to engage in particular self-management behaviors (reduce fat or calories, increase physical activity or exercise, and control or lose weight) predicted actually engaging in the particular behavior and whether the impact of medical advice on engaging in the behavior differed by race/ethnicity. Additional analyses examined whether these relationships were maintained when other factors potentially related to engaging in diabetes self management such as participants' diabetes education, sociodemographics and physical characteristics were controlled. Sample weights were used to account for the complex sample design. Although medical advice to the patient is considered a standard of care for diabetes, approximately one-third of the sample reported not receiving dietary, weight management, or physical activity self-management advice. Participants who reported being given medical advice for each specific diabetes self-management behaviors were 4-8 times more likely to report performing the corresponding behaviors, independent of race. These results supported the ecological model with certain caveats. Providing standard medical advice appears to lead to diabetes self-management behaviors as reported by adults across the United States. Moreover, it does not appear that race/ethnicity influenced reporting performance of the standard diabetes self-management behavior. Longitudinal studies evaluating patient-provider communication, medical advice and diabetes self-management behaviors are needed to clarify our findings.

  20. Neotropical migrant landbirds and landscape changes in Los Tuxtlas, Veracruz, Mexico

    Science.gov (United States)

    Estrada, A.; Coates-Estrada, R.; Diaz-Islas, E.; Robbins, C.S.; Dowell, B.A.; Meritt, D.; Wilson, Marcia H.; Sader, Steven A.

    1995-01-01

    Faced with the problem of habitat loss and with the need to preserve the remaining components of the original avian biodiversity in neotropical regions such as Los Tuxtlas, it is imperative to determine how the neotropical migrant bird species have responded to the anthropogenic alterations of their natural habitats. To provide data in this direction, we censused neotropical migrant birds in undisturbed and in disturbed forest fragments and in regeneratlng forests (young second growths and old second growths). In addition, we conducted censuses in the following man-made habitats: arboreal agricultural habitats (cacao, coffee, mixed, citrus, and allspice), non-arboreal agricultural habitats (corn and jalapeno chili pepper), live fences, and pastures. We censused 4186 neotropical migrant birds representing 71 species. Seven species (Magnolia Warbler, Hooded Warbler, Wilson's Warbler, American Redstart, White-eyed Vireo, Yellow-rumped Warbler, Black-and-white Warbler) accounted for 50% of total records. Isolating distance was an important variable influencing species richness at the non-pasture habitats studied. Disturbed forest fragments had significantly fewer species and individuals than undisturbed forest fragments and than regenerating forests. Pastures were the poorest habitat in neotropical migrant birds. Agricultural habitats, however, were particularly rich in individuals and species (3479 individuals of 59 species). Arboreal agricultural habitats and live fences were richer in species and in birds than non-arboreal man-made habitats and were also the habitats most similar to the undisturbed forest fragments in species assemblage. We discuss the conservation value for neotropical migrant birds of agricultural habitats and of live fences as landscape elements that help reduce physical and biotic isolation among the remaining configurations of forest fragments and compensate, in part, for the loss of vegetation area and habitat heterogeneity that has resulted